From 75563cd7253bb72876c5c97ff2f7813dd1485bc5 Mon Sep 17 00:00:00 2001 From: Christopher Acosta Date: Fri, 27 Jan 2023 22:23:01 +0100 Subject: [PATCH 01/57] Error code E0794 for late-bound lifetime parameter error. --- compiler/rustc_error_codes/src/error_codes.rs | 1 + .../src/error_codes/E0794.md | 64 +++++++++++++++++++ .../src/astconv/generics.rs | 2 +- .../const-arg-in-const-arg.full.stderr | 17 ++--- .../const-arg-in-const-arg.min.stderr | 18 +++--- tests/ui/late-bound-lifetimes/issue-80618.rs | 8 +++ .../late-bound-lifetimes/issue-80618.stderr | 15 +++++ .../method-call-lifetime-args-fail.stderr | 31 ++++----- .../methods/method-call-lifetime-args.stderr | 5 +- 9 files changed, 126 insertions(+), 35 deletions(-) create mode 100644 compiler/rustc_error_codes/src/error_codes/E0794.md create mode 100644 tests/ui/late-bound-lifetimes/issue-80618.rs create mode 100644 tests/ui/late-bound-lifetimes/issue-80618.stderr diff --git a/compiler/rustc_error_codes/src/error_codes.rs b/compiler/rustc_error_codes/src/error_codes.rs index df857be85ada..d104ff0891d3 100644 --- a/compiler/rustc_error_codes/src/error_codes.rs +++ b/compiler/rustc_error_codes/src/error_codes.rs @@ -513,6 +513,7 @@ E0790: include_str!("./error_codes/E0790.md"), E0791: include_str!("./error_codes/E0791.md"), E0792: include_str!("./error_codes/E0792.md"), E0793: include_str!("./error_codes/E0793.md"), +E0794: include_str!("./error_codes/E0794.md"), } // Undocumented removed error codes. Note that many removed error codes are documented. diff --git a/compiler/rustc_error_codes/src/error_codes/E0794.md b/compiler/rustc_error_codes/src/error_codes/E0794.md new file mode 100644 index 000000000000..a33802885c00 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0794.md @@ -0,0 +1,64 @@ +A lifetime parameter of a function definition is called *late-bound* if it both: + +1. appears in an argument type +2. does not appear in a generic type constraint + +You cannot specify lifetime arguments for late-bound lifetime parameters. + +Erroneous code example: + +```compile_fail,E0794 +fn foo<'a>(x: &'a str) -> &'a str { x } +let _ = foo::<'static>; +``` + +The type of a concrete instance of a generic function is universally quantified +over late-bound lifetime parameters. This is because we want the function to +work for any lifetime substituted for the late-bound lifetime parameter, no +matter where the function is called. Consequently, it doesn't make sense to +specify arguments for late-bound lifetime parameters, since they are not +resolved until the function's call site(s). + +To fix the issue, remove the specified lifetime: + +``` +fn foo<'a>(x: &'a str) -> &'a str { x } +let _ = foo; +``` + +### Additional information + +Lifetime parameters that are not late-bound are called *early-bound*. +Confusion may arise from the fact that late-bound and early-bound +lifetime parameters are declared the same way in function definitions. +When referring to a function pointer type, universal quantification over +late-bound lifetime parameters can be made explicit: + +``` +trait BarTrait<'a> {} + +struct Bar<'a> { + s: &'a str +} + +impl<'a> BarTrait<'a> for Bar<'a> {} + +fn bar<'a, 'b, T>(x: &'a str, _t: T) -> &'a str +where T: BarTrait<'b> +{ + x +} + +let bar_fn: for<'a> fn(&'a str, Bar<'static>) -> &'a str = bar; // OK +let bar_fn2 = bar::<'static, Bar>; // Not allowed +let bar_fn3 = bar::; // OK +``` + +In the definition of `bar`, the lifetime parameter `'a` is late-bound, while +`'b` is early-bound. This is reflected in the type annotation for `bar_fn`, +where `'a` is universally quantified and `'b` is substituted by a specific +lifetime. It is not allowed to explicitly specify early-bound lifetime +arguments when late-bound lifetime parameters are present (as for `bar_fn2`, +see issue #42868: https://github.com/rust-lang/rust/issues/42868), although the +types that are constrained by early-bound parameters can be specified (as for +`bar_fn3`). diff --git a/compiler/rustc_hir_analysis/src/astconv/generics.rs b/compiler/rustc_hir_analysis/src/astconv/generics.rs index 7f6518ffd714..11c5028744ac 100644 --- a/compiler/rustc_hir_analysis/src/astconv/generics.rs +++ b/compiler/rustc_hir_analysis/src/astconv/generics.rs @@ -618,7 +618,7 @@ pub(crate) fn prohibit_explicit_late_bound_lifetimes( if position == GenericArgPosition::Value && args.num_lifetime_params() != param_counts.lifetimes { - let mut err = tcx.sess.struct_span_err(span, msg); + let mut err = struct_span_err!(tcx.sess, span, E0794, "{}", msg); err.span_note(span_late, note); err.emit(); } else { diff --git a/tests/ui/const-generics/const-arg-in-const-arg.full.stderr b/tests/ui/const-generics/const-arg-in-const-arg.full.stderr index 8672e79b3e8c..463a37d7e3d1 100644 --- a/tests/ui/const-generics/const-arg-in-const-arg.full.stderr +++ b/tests/ui/const-generics/const-arg-in-const-arg.full.stderr @@ -1,4 +1,4 @@ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:18:23 | LL | let _: [u8; faz::<'a>(&())]; @@ -10,7 +10,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:21:23 | LL | let _: [u8; faz::<'b>(&())]; @@ -22,7 +22,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:41:24 | LL | let _: Foo<{ faz::<'a>(&()) }>; @@ -34,7 +34,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:44:24 | LL | let _: Foo<{ faz::<'b>(&()) }>; @@ -94,7 +94,7 @@ LL | let _ = [0; bar::()]; | = help: try adding a `where` bound using this expression: `where [(); bar::()]:` -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:30:23 | LL | let _ = [0; faz::<'a>(&())]; @@ -106,7 +106,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:33:23 | LL | let _ = [0; faz::<'b>(&())]; @@ -134,7 +134,7 @@ LL | let _ = Foo::<{ bar::() }>; | = help: try adding a `where` bound using this expression: `where [(); { bar::() }]:` -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:52:27 | LL | let _ = Foo::<{ faz::<'a>(&()) }>; @@ -146,7 +146,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:55:27 | LL | let _ = Foo::<{ faz::<'b>(&()) }>; @@ -160,3 +160,4 @@ LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } error: aborting due to 16 previous errors +For more information about this error, try `rustc --explain E0794`. diff --git a/tests/ui/const-generics/const-arg-in-const-arg.min.stderr b/tests/ui/const-generics/const-arg-in-const-arg.min.stderr index f1353aa99437..a7bd9c62b0ee 100644 --- a/tests/ui/const-generics/const-arg-in-const-arg.min.stderr +++ b/tests/ui/const-generics/const-arg-in-const-arg.min.stderr @@ -216,7 +216,7 @@ help: if this generic argument was intended as a const parameter, surround it wi LL | let _: [u8; bar::<{ N }>()]; | + + -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:18:23 | LL | let _: [u8; faz::<'a>(&())]; @@ -228,7 +228,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:21:23 | LL | let _: [u8; faz::<'b>(&())]; @@ -251,7 +251,7 @@ help: if this generic argument was intended as a const parameter, surround it wi LL | let _: Foo<{ bar::<{ N }>() }>; | + + -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:41:24 | LL | let _: Foo<{ faz::<'a>(&()) }>; @@ -263,7 +263,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:44:24 | LL | let _: Foo<{ faz::<'b>(&()) }>; @@ -294,7 +294,7 @@ help: if this generic argument was intended as a const parameter, surround it wi LL | let _ = [0; bar::<{ N }>()]; | + + -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:30:23 | LL | let _ = [0; faz::<'a>(&())]; @@ -306,7 +306,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:33:23 | LL | let _ = [0; faz::<'b>(&())]; @@ -329,7 +329,7 @@ help: if this generic argument was intended as a const parameter, surround it wi LL | let _ = Foo::<{ bar::<{ N }>() }>; | + + -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:52:27 | LL | let _ = Foo::<{ faz::<'a>(&()) }>; @@ -341,7 +341,7 @@ note: the late bound lifetime parameter is introduced here LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/const-arg-in-const-arg.rs:55:27 | LL | let _ = Foo::<{ faz::<'b>(&()) }>; @@ -355,5 +355,5 @@ LL | const fn faz<'a>(_: &'a ()) -> usize { 13 } error: aborting due to 36 previous errors -Some errors have detailed explanations: E0658, E0747. +Some errors have detailed explanations: E0658, E0747, E0794. For more information about an error, try `rustc --explain E0658`. diff --git a/tests/ui/late-bound-lifetimes/issue-80618.rs b/tests/ui/late-bound-lifetimes/issue-80618.rs new file mode 100644 index 000000000000..6aa8ff461a9a --- /dev/null +++ b/tests/ui/late-bound-lifetimes/issue-80618.rs @@ -0,0 +1,8 @@ +fn foo<'a>(x: &'a str) -> &'a str { + x +} + +fn main() { + let _ = foo::<'static>; +//~^ ERROR cannot specify lifetime arguments explicitly if late bound lifetime parameters are present [E0794] +} diff --git a/tests/ui/late-bound-lifetimes/issue-80618.stderr b/tests/ui/late-bound-lifetimes/issue-80618.stderr new file mode 100644 index 000000000000..cf7423fc16fe --- /dev/null +++ b/tests/ui/late-bound-lifetimes/issue-80618.stderr @@ -0,0 +1,15 @@ +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present + --> $DIR/issue-80618.rs:6:19 + | +LL | let _ = foo::<'static>; + | ^^^^^^^ + | +note: the late bound lifetime parameter is introduced here + --> $DIR/issue-80618.rs:1:8 + | +LL | fn foo<'a>(x: &'a str) -> &'a str { + | ^^ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0794`. diff --git a/tests/ui/methods/method-call-lifetime-args-fail.stderr b/tests/ui/methods/method-call-lifetime-args-fail.stderr index 34526256f997..645d8b8d14ad 100644 --- a/tests/ui/methods/method-call-lifetime-args-fail.stderr +++ b/tests/ui/methods/method-call-lifetime-args-fail.stderr @@ -30,7 +30,7 @@ note: method defined here, with 2 lifetime parameters: `'a`, `'b` LL | fn early<'a, 'b>(self) -> (&'a u8, &'b u8) { loop {} } | ^^^^^ -- -- -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:27:15 | LL | S::late::<'static>(S, &0, &0); @@ -42,7 +42,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late<'a, 'b>(self, _: &'a u8, _: &'b u8) {} | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:29:15 | LL | S::late::<'static, 'static>(S, &0, &0); @@ -54,7 +54,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late<'a, 'b>(self, _: &'a u8, _: &'b u8) {} | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:31:15 | LL | S::late::<'static, 'static, 'static>(S, &0, &0); @@ -66,7 +66,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late<'a, 'b>(self, _: &'a u8, _: &'b u8) {} | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:34:21 | LL | S::late_early::<'static, 'static>(S, &0); @@ -78,7 +78,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_early<'a, 'b>(self, _: &'a u8) -> &'b u8 { loop {} } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:36:21 | LL | S::late_early::<'static, 'static, 'static>(S, &0); @@ -90,7 +90,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_early<'a, 'b>(self, _: &'a u8) -> &'b u8 { loop {} } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:40:24 | LL | S::late_implicit::<'static>(S, &0, &0); @@ -102,7 +102,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit(self, _: &u8, _: &u8) {} | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:42:24 | LL | S::late_implicit::<'static, 'static>(S, &0, &0); @@ -114,7 +114,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit(self, _: &u8, _: &u8) {} | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:44:24 | LL | S::late_implicit::<'static, 'static, 'static>(S, &0, &0); @@ -126,7 +126,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit(self, _: &u8, _: &u8) {} | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:47:30 | LL | S::late_implicit_early::<'static, 'static>(S, &0); @@ -138,7 +138,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit_early<'b>(self, _: &u8) -> &'b u8 { loop {} } | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:49:30 | LL | S::late_implicit_early::<'static, 'static, 'static>(S, &0); @@ -150,7 +150,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit_early<'b>(self, _: &u8) -> &'b u8 { loop {} } | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:52:35 | LL | S::late_implicit_self_early::<'static, 'static>(&S); @@ -162,7 +162,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit_self_early<'b>(&self) -> &'b u8 { loop {} } | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:54:35 | LL | S::late_implicit_self_early::<'static, 'static, 'static>(&S); @@ -174,7 +174,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_implicit_self_early<'b>(&self) -> &'b u8 { loop {} } | ^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:57:28 | LL | S::late_unused_early::<'static, 'static>(S); @@ -186,7 +186,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late_unused_early<'a, 'b>(self) -> &'b u8 { loop {} } | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args-fail.rs:59:28 | LL | S::late_unused_early::<'static, 'static, 'static>(S); @@ -232,4 +232,5 @@ LL | fn early<'a, 'b>(self) -> (&'a u8, &'b u8) { loop {} } error: aborting due to 18 previous errors -For more information about this error, try `rustc --explain E0107`. +Some errors have detailed explanations: E0107, E0794. +For more information about an error, try `rustc --explain E0107`. diff --git a/tests/ui/methods/method-call-lifetime-args.stderr b/tests/ui/methods/method-call-lifetime-args.stderr index 64ae79e9bb2b..b215d5832171 100644 --- a/tests/ui/methods/method-call-lifetime-args.stderr +++ b/tests/ui/methods/method-call-lifetime-args.stderr @@ -1,4 +1,4 @@ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args.rs:9:15 | LL | S::late::<'static>(S, &0, &0); @@ -10,7 +10,7 @@ note: the late bound lifetime parameter is introduced here LL | fn late<'a, 'b>(self, _: &'a u8, _: &'b u8) {} | ^^ -error: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present +error[E0794]: cannot specify lifetime arguments explicitly if late bound lifetime parameters are present --> $DIR/method-call-lifetime-args.rs:11:24 | LL | S::late_implicit::<'static>(S, &0, &0); @@ -24,3 +24,4 @@ LL | fn late_implicit(self, _: &u8, _: &u8) {} error: aborting due to 2 previous errors +For more information about this error, try `rustc --explain E0794`. From cbf15176db8f698b830877f80938d073ef0510ac Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Mon, 6 Mar 2023 09:14:13 +0100 Subject: [PATCH 02/57] Update host compiler to LLVM 16 This updates the host compiler for dist-x86_64-linux to LLVM 16, pulling in the BOLT fix at https://github.com/llvm/llvm-project/commit/1de305da428598d79b7d2d9e70962130142f7ca4, which is needed to update Rust to LLVM 16. --- src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh b/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh index 9abfd4e97311..de0fb95efd07 100755 --- a/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh +++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh @@ -4,7 +4,7 @@ set -ex source shared.sh -LLVM=llvmorg-15.0.0 +LLVM=llvmorg-16.0.0-rc4 mkdir llvm-project cd llvm-project From ce6adccdade1ec29bff031c296c5ae0d80ab0446 Mon Sep 17 00:00:00 2001 From: Thom Chiovoloni Date: Sun, 12 Mar 2023 00:23:28 -0800 Subject: [PATCH 03/57] Prevent stable `libtest` from supporting `-Zunstable-options` --- src/bootstrap/compile.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs index 8b80dfc0f9b9..54971af644c2 100644 --- a/src/bootstrap/compile.rs +++ b/src/bootstrap/compile.rs @@ -339,6 +339,12 @@ pub fn std_cargo(builder: &Builder<'_>, target: TargetSelection, stage: u32, car "" }; + // `libtest` uses this to know whether or not to support + // `-Zunstable-options`. + if !builder.unstable_features() { + cargo.env("CFG_DISABLE_UNSTABLE_FEATURES", "1"); + } + let mut features = String::new(); // Cranelift doesn't support `asm`. From 9afffc5b61d34d09e8f677dbfca8f283fc7fa697 Mon Sep 17 00:00:00 2001 From: clubby789 Date: Tue, 14 Mar 2023 17:18:26 +0000 Subject: [PATCH 04/57] Remove box expressions from HIR --- compiler/rustc_ast/src/util/parser.rs | 4 +--- compiler/rustc_hir/src/hir.rs | 8 +------- compiler/rustc_hir/src/intravisit.rs | 1 - compiler/rustc_hir_pretty/src/lib.rs | 4 ---- compiler/rustc_hir_typeck/src/expr.rs | 11 ----------- compiler/rustc_hir_typeck/src/expr_use_visitor.rs | 4 ---- .../src/generator_interior/drop_ranges/cfg_build.rs | 2 -- compiler/rustc_hir_typeck/src/mem_categorization.rs | 1 - compiler/rustc_middle/src/traits/mod.rs | 2 -- compiler/rustc_mir_build/src/thir/cx/expr.rs | 1 - compiler/rustc_passes/src/hir_stats.rs | 2 +- compiler/rustc_passes/src/liveness.rs | 5 +---- compiler/rustc_passes/src/naked_functions.rs | 3 +-- .../src/traits/error_reporting/suggestions.rs | 3 --- src/tools/clippy/clippy_lints/src/infinite_iter.rs | 2 +- src/tools/clippy/clippy_lints/src/loops/never_loop.rs | 3 +-- .../src/matches/significant_drop_in_scrutinee.rs | 1 - .../clippy_lints/src/methods/unnecessary_sort_by.rs | 4 ---- src/tools/clippy/clippy_lints/src/no_effect.rs | 6 ++---- src/tools/clippy/clippy_lints/src/shadow.rs | 3 +-- .../clippy_lints/src/significant_drop_tightening.rs | 1 - src/tools/clippy/clippy_lints/src/utils/author.rs | 5 ----- src/tools/clippy/clippy_utils/src/check_proc_macro.rs | 1 - src/tools/clippy/clippy_utils/src/eager_or_lazy.rs | 3 +-- src/tools/clippy/clippy_utils/src/hir_utils.rs | 3 +-- src/tools/clippy/clippy_utils/src/sugg.rs | 1 - src/tools/clippy/clippy_utils/src/visitors.rs | 1 - 27 files changed, 12 insertions(+), 73 deletions(-) diff --git a/compiler/rustc_ast/src/util/parser.rs b/compiler/rustc_ast/src/util/parser.rs index 3a0af04f9eb9..3893875e9a40 100644 --- a/compiler/rustc_ast/src/util/parser.rs +++ b/compiler/rustc_ast/src/util/parser.rs @@ -259,7 +259,6 @@ pub enum ExprPrecedence { Assign, AssignOp, - Box, AddrOf, Let, Unary, @@ -319,8 +318,7 @@ impl ExprPrecedence { ExprPrecedence::AssignOp => AssocOp::Assign.precedence() as i8, // Unary, prefix - ExprPrecedence::Box - | ExprPrecedence::AddrOf + ExprPrecedence::AddrOf // Here `let pats = expr` has `let pats =` as a "unary" prefix of `expr`. // However, this is not exactly right. When `let _ = a` is the LHS of a binop we // need parens sometimes. E.g. we can print `(let _ = a) && b` as `let _ = a && b` diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs index f00a5f24e454..f4b46b9a131f 100644 --- a/compiler/rustc_hir/src/hir.rs +++ b/compiler/rustc_hir/src/hir.rs @@ -1673,7 +1673,6 @@ pub struct Expr<'hir> { impl Expr<'_> { pub fn precedence(&self) -> ExprPrecedence { match self.kind { - ExprKind::Box(_) => ExprPrecedence::Box, ExprKind::ConstBlock(_) => ExprPrecedence::ConstBlock, ExprKind::Array(_) => ExprPrecedence::Array, ExprKind::Call(..) => ExprPrecedence::Call, @@ -1763,7 +1762,6 @@ impl Expr<'_> { | ExprKind::Lit(_) | ExprKind::ConstBlock(..) | ExprKind::Unary(..) - | ExprKind::Box(..) | ExprKind::AddrOf(..) | ExprKind::Binary(..) | ExprKind::Yield(..) @@ -1851,7 +1849,6 @@ impl Expr<'_> { | ExprKind::InlineAsm(..) | ExprKind::AssignOp(..) | ExprKind::ConstBlock(..) - | ExprKind::Box(..) | ExprKind::Binary(..) | ExprKind::Yield(..) | ExprKind::DropTemps(..) @@ -1862,8 +1859,7 @@ impl Expr<'_> { /// To a first-order approximation, is this a pattern? pub fn is_approximately_pattern(&self) -> bool { match &self.kind { - ExprKind::Box(_) - | ExprKind::Array(_) + ExprKind::Array(_) | ExprKind::Call(..) | ExprKind::Tup(_) | ExprKind::Lit(_) @@ -1910,8 +1906,6 @@ pub fn is_range_literal(expr: &Expr<'_>) -> bool { #[derive(Debug, HashStable_Generic)] pub enum ExprKind<'hir> { - /// A `box x` expression. - Box(&'hir Expr<'hir>), /// Allow anonymous constants from an inline `const` block ConstBlock(AnonConst), /// An array (e.g., `[a, b, c, d]`). diff --git a/compiler/rustc_hir/src/intravisit.rs b/compiler/rustc_hir/src/intravisit.rs index cc0f64017e42..234256ab553c 100644 --- a/compiler/rustc_hir/src/intravisit.rs +++ b/compiler/rustc_hir/src/intravisit.rs @@ -682,7 +682,6 @@ pub fn walk_anon_const<'v, V: Visitor<'v>>(visitor: &mut V, constant: &'v AnonCo pub fn walk_expr<'v, V: Visitor<'v>>(visitor: &mut V, expression: &'v Expr<'v>) { visitor.visit_id(expression.hir_id); match expression.kind { - ExprKind::Box(ref subexpression) => visitor.visit_expr(subexpression), ExprKind::Array(subexpressions) => { walk_list!(visitor, visit_expr, subexpressions); } diff --git a/compiler/rustc_hir_pretty/src/lib.rs b/compiler/rustc_hir_pretty/src/lib.rs index d715b03e40eb..63ea6c904775 100644 --- a/compiler/rustc_hir_pretty/src/lib.rs +++ b/compiler/rustc_hir_pretty/src/lib.rs @@ -1366,10 +1366,6 @@ impl<'a> State<'a> { self.ibox(INDENT_UNIT); self.ann.pre(self, AnnNode::Expr(expr)); match expr.kind { - hir::ExprKind::Box(expr) => { - self.word_space("Box::new"); - self.print_call_post(std::slice::from_ref(expr)); - } hir::ExprKind::Array(exprs) => { self.print_expr_vec(exprs); } diff --git a/compiler/rustc_hir_typeck/src/expr.rs b/compiler/rustc_hir_typeck/src/expr.rs index 7fc4ccb04ee0..b3998446cd57 100644 --- a/compiler/rustc_hir_typeck/src/expr.rs +++ b/compiler/rustc_hir_typeck/src/expr.rs @@ -283,7 +283,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let tcx = self.tcx; match expr.kind { - ExprKind::Box(subexpr) => self.check_expr_box(subexpr, expected), ExprKind::Lit(ref lit) => self.check_lit(&lit, expected), ExprKind::Binary(op, lhs, rhs) => self.check_binop(expr, op, lhs, rhs, expected), ExprKind::Assign(lhs, rhs, span) => { @@ -358,16 +357,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } } - fn check_expr_box(&self, expr: &'tcx hir::Expr<'tcx>, expected: Expectation<'tcx>) -> Ty<'tcx> { - let expected_inner = expected.to_option(self).map_or(NoExpectation, |ty| match ty.kind() { - ty::Adt(def, _) if def.is_box() => Expectation::rvalue_hint(self, ty.boxed_ty()), - _ => NoExpectation, - }); - let referent_ty = self.check_expr_with_expectation(expr, expected_inner); - self.require_type_is_sized(referent_ty, expr.span, traits::SizedBoxType); - self.tcx.mk_box(referent_ty) - } - fn check_expr_unary( &self, unop: hir::UnOp, diff --git a/compiler/rustc_hir_typeck/src/expr_use_visitor.rs b/compiler/rustc_hir_typeck/src/expr_use_visitor.rs index b9a058d6bba2..9aa6c7f103f8 100644 --- a/compiler/rustc_hir_typeck/src/expr_use_visitor.rs +++ b/compiler/rustc_hir_typeck/src/expr_use_visitor.rs @@ -356,10 +356,6 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> { self.walk_captures(closure); } - hir::ExprKind::Box(ref base) => { - self.consume_expr(base); - } - hir::ExprKind::Yield(value, _) => { self.consume_expr(value); } diff --git a/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs b/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs index 7c0402b1c7fb..1eeb7d984ee0 100644 --- a/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs +++ b/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs @@ -190,7 +190,6 @@ impl<'a, 'tcx> DropRangeVisitor<'a, 'tcx> { // // Some of these may be interesting in the future ExprKind::Path(..) - | ExprKind::Box(..) | ExprKind::ConstBlock(..) | ExprKind::Array(..) | ExprKind::Call(..) @@ -478,7 +477,6 @@ impl<'a, 'tcx> Visitor<'tcx> for DropRangeVisitor<'a, 'tcx> { | ExprKind::AssignOp(..) | ExprKind::Binary(..) | ExprKind::Block(..) - | ExprKind::Box(..) | ExprKind::Cast(..) | ExprKind::Closure { .. } | ExprKind::ConstBlock(..) diff --git a/compiler/rustc_hir_typeck/src/mem_categorization.rs b/compiler/rustc_hir_typeck/src/mem_categorization.rs index 4d3969d28aa2..9a8d7ca9e338 100644 --- a/compiler/rustc_hir_typeck/src/mem_categorization.rs +++ b/compiler/rustc_hir_typeck/src/mem_categorization.rs @@ -382,7 +382,6 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> { | hir::ExprKind::Struct(..) | hir::ExprKind::Repeat(..) | hir::ExprKind::InlineAsm(..) - | hir::ExprKind::Box(..) | hir::ExprKind::Err(_) => Ok(self.cat_rvalue(expr.hir_id, expr.span, expr_ty)), } } diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs index 6231dd9b6f54..fb3e9cb12631 100644 --- a/compiler/rustc_middle/src/traits/mod.rs +++ b/compiler/rustc_middle/src/traits/mod.rs @@ -305,8 +305,6 @@ pub enum ObligationCauseCode<'tcx> { SizedReturnType, /// Yield type must be `Sized`. SizedYieldType, - /// Box expression result type must be `Sized`. - SizedBoxType, /// Inline asm operand type must be `Sized`. InlineAsmSized, /// `[expr; N]` requires `type_of(expr): Copy`. diff --git a/compiler/rustc_mir_build/src/thir/cx/expr.rs b/compiler/rustc_mir_build/src/thir/cx/expr.rs index 9086412c09a1..cecb8a61aa2f 100644 --- a/compiler/rustc_mir_build/src/thir/cx/expr.rs +++ b/compiler/rustc_mir_build/src/thir/cx/expr.rs @@ -780,7 +780,6 @@ impl<'tcx> Cx<'tcx> { hir::ExprKind::DropTemps(ref source) => { ExprKind::Use { source: self.mirror_expr(source) } } - hir::ExprKind::Box(ref value) => ExprKind::Box { value: self.mirror_expr(value) }, hir::ExprKind::Array(ref fields) => { ExprKind::Array { fields: self.mirror_exprs(fields) } } diff --git a/compiler/rustc_passes/src/hir_stats.rs b/compiler/rustc_passes/src/hir_stats.rs index 3e0d53029ef9..47e032758f23 100644 --- a/compiler/rustc_passes/src/hir_stats.rs +++ b/compiler/rustc_passes/src/hir_stats.rs @@ -300,7 +300,7 @@ impl<'v> hir_visit::Visitor<'v> for StatCollector<'v> { record_variants!( (self, e, e.kind, Id::Node(e.hir_id), hir, Expr, ExprKind), [ - Box, ConstBlock, Array, Call, MethodCall, Tup, Binary, Unary, Lit, Cast, Type, + ConstBlock, Array, Call, MethodCall, Tup, Binary, Unary, Lit, Cast, Type, DropTemps, Let, If, Loop, Match, Closure, Block, Assign, AssignOp, Field, Index, Path, AddrOf, Break, Continue, Ret, InlineAsm, Struct, Repeat, Yield, Err ] diff --git a/compiler/rustc_passes/src/liveness.rs b/compiler/rustc_passes/src/liveness.rs index db9d0dcc3005..36324e6f8da4 100644 --- a/compiler/rustc_passes/src/liveness.rs +++ b/compiler/rustc_passes/src/liveness.rs @@ -473,7 +473,6 @@ impl<'tcx> Visitor<'tcx> for IrMaps<'tcx> { | hir::ExprKind::Struct(..) | hir::ExprKind::Repeat(..) | hir::ExprKind::InlineAsm(..) - | hir::ExprKind::Box(..) | hir::ExprKind::Type(..) | hir::ExprKind::Err(_) | hir::ExprKind::Path(hir::QPath::TypeRelative(..)) @@ -1059,8 +1058,7 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> { self.propagate_through_expr(&l, r_succ) } - hir::ExprKind::Box(ref e) - | hir::ExprKind::AddrOf(_, _, ref e) + hir::ExprKind::AddrOf(_, _, ref e) | hir::ExprKind::Cast(ref e, _) | hir::ExprKind::Type(ref e, _) | hir::ExprKind::DropTemps(ref e) @@ -1425,7 +1423,6 @@ fn check_expr<'tcx>(this: &mut Liveness<'_, 'tcx>, expr: &'tcx Expr<'tcx>) { | hir::ExprKind::Closure { .. } | hir::ExprKind::Path(_) | hir::ExprKind::Yield(..) - | hir::ExprKind::Box(..) | hir::ExprKind::Type(..) | hir::ExprKind::Err(_) => {} } diff --git a/compiler/rustc_passes/src/naked_functions.rs b/compiler/rustc_passes/src/naked_functions.rs index c5b5cf7f5a96..f07a64c7c3ca 100644 --- a/compiler/rustc_passes/src/naked_functions.rs +++ b/compiler/rustc_passes/src/naked_functions.rs @@ -179,8 +179,7 @@ enum ItemKind { impl<'tcx> CheckInlineAssembly<'tcx> { fn check_expr(&mut self, expr: &'tcx hir::Expr<'tcx>, span: Span) { match expr.kind { - ExprKind::Box(..) - | ExprKind::ConstBlock(..) + ExprKind::ConstBlock(..) | ExprKind::Array(..) | ExprKind::Call(..) | ExprKind::MethodCall(..) diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs index 5541c0850753..186bfc701bc4 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs @@ -2944,9 +2944,6 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { ObligationCauseCode::SizedYieldType => { err.note("the yield type of a generator must have a statically known size"); } - ObligationCauseCode::SizedBoxType => { - err.note("the type of a box expression must have a statically known size"); - } ObligationCauseCode::AssignmentLhsSized => { err.note("the left-hand-side of an assignment must have a statically known size"); } diff --git a/src/tools/clippy/clippy_lints/src/infinite_iter.rs b/src/tools/clippy/clippy_lints/src/infinite_iter.rs index d1d2db27c6fc..fe28c526be35 100644 --- a/src/tools/clippy/clippy_lints/src/infinite_iter.rs +++ b/src/tools/clippy/clippy_lints/src/infinite_iter.rs @@ -167,7 +167,7 @@ fn is_infinite(cx: &LateContext<'_>, expr: &Expr<'_>) -> Finiteness { Finite }, ExprKind::Block(block, _) => block.expr.as_ref().map_or(Finite, |e| is_infinite(cx, e)), - ExprKind::Box(e) | ExprKind::AddrOf(BorrowKind::Ref, _, e) => is_infinite(cx, e), + ExprKind::AddrOf(BorrowKind::Ref, _, e) => is_infinite(cx, e), ExprKind::Call(path, _) => { if let ExprKind::Path(ref qpath) = path.kind { cx.qpath_res(qpath, path.hir_id) diff --git a/src/tools/clippy/clippy_lints/src/loops/never_loop.rs b/src/tools/clippy/clippy_lints/src/loops/never_loop.rs index b1bc10802e1b..f0a1b1dfe562 100644 --- a/src/tools/clippy/clippy_lints/src/loops/never_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/never_loop.rs @@ -124,8 +124,7 @@ fn stmt_to_expr<'tcx>(stmt: &Stmt<'tcx>) -> Option<(&'tcx Expr<'tcx>, Option<&'t #[allow(clippy::too_many_lines)] fn never_loop_expr(expr: &Expr<'_>, ignore_ids: &mut Vec, main_loop_id: HirId) -> NeverLoopResult { match expr.kind { - ExprKind::Box(e) - | ExprKind::Unary(_, e) + ExprKind::Unary(_, e) | ExprKind::Cast(e, _) | ExprKind::Type(e, _) | ExprKind::Field(e, _) diff --git a/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs b/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs index b33a24781729..04225beeb704 100644 --- a/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs +++ b/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs @@ -321,7 +321,6 @@ impl<'a, 'tcx> Visitor<'tcx> for SigDropHelper<'a, 'tcx> { self.has_significant_drop = true; } } - ExprKind::Box(..) | ExprKind::Array(..) | ExprKind::Call(..) | ExprKind::Unary(..) | diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_sort_by.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_sort_by.rs index 5201da52bbf1..67618f7038ad 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_sort_by.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_sort_by.rs @@ -33,10 +33,6 @@ struct SortByKeyDetection { /// contains a and the other replaces it with b) fn mirrored_exprs(a_expr: &Expr<'_>, a_ident: &Ident, b_expr: &Expr<'_>, b_ident: &Ident) -> bool { match (&a_expr.kind, &b_expr.kind) { - // Two boxes with mirrored contents - (ExprKind::Box(left_expr), ExprKind::Box(right_expr)) => { - mirrored_exprs(left_expr, a_ident, right_expr, b_ident) - }, // Two arrays with mirrored contents (ExprKind::Array(left_exprs), ExprKind::Array(right_exprs)) => { iter::zip(*left_exprs, *right_exprs).all(|(left, right)| mirrored_exprs(left, a_ident, right, b_ident)) diff --git a/src/tools/clippy/clippy_lints/src/no_effect.rs b/src/tools/clippy/clippy_lints/src/no_effect.rs index 79c1ae4861e8..e3712190e672 100644 --- a/src/tools/clippy/clippy_lints/src/no_effect.rs +++ b/src/tools/clippy/clippy_lints/src/no_effect.rs @@ -127,8 +127,7 @@ fn has_no_effect(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { | ExprKind::Type(inner, _) | ExprKind::Unary(_, inner) | ExprKind::Field(inner, _) - | ExprKind::AddrOf(_, _, inner) - | ExprKind::Box(inner) => has_no_effect(cx, inner), + | ExprKind::AddrOf(_, _, inner) => has_no_effect(cx, inner), ExprKind::Struct(_, fields, ref base) => { !has_drop(cx, cx.typeck_results().expr_ty(expr)) && fields.iter().all(|field| has_no_effect(cx, field.expr)) @@ -234,8 +233,7 @@ fn reduce_expression<'a>(cx: &LateContext<'_>, expr: &'a Expr<'a>) -> Option reduce_expression(cx, inner).or_else(|| Some(vec![inner])), + | ExprKind::AddrOf(_, _, inner) => reduce_expression(cx, inner).or_else(|| Some(vec![inner])), ExprKind::Struct(_, fields, ref base) => { if has_drop(cx, cx.typeck_results().expr_ty(expr)) { None diff --git a/src/tools/clippy/clippy_lints/src/shadow.rs b/src/tools/clippy/clippy_lints/src/shadow.rs index 87f966ced0df..ae7d19624ba6 100644 --- a/src/tools/clippy/clippy_lints/src/shadow.rs +++ b/src/tools/clippy/clippy_lints/src/shadow.rs @@ -213,8 +213,7 @@ fn is_self_shadow(cx: &LateContext<'_>, pat: &Pat<'_>, mut expr: &Expr<'_>, hir_ } loop { expr = match expr.kind { - ExprKind::Box(e) - | ExprKind::AddrOf(_, _, e) + ExprKind::AddrOf(_, _, e) | ExprKind::Block( &Block { stmts: [], diff --git a/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs b/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs index e2d90edec5a4..e12681c0a0ca 100644 --- a/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs +++ b/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs @@ -380,7 +380,6 @@ impl<'cx, 'sdt, 'tcx> Visitor<'tcx> for SigDropFinder<'cx, 'sdt, 'tcx> { | hir::ExprKind::Assign(..) | hir::ExprKind::AssignOp(..) | hir::ExprKind::Binary(..) - | hir::ExprKind::Box(..) | hir::ExprKind::Call(..) | hir::ExprKind::Field(..) | hir::ExprKind::If(..) diff --git a/src/tools/clippy/clippy_lints/src/utils/author.rs b/src/tools/clippy/clippy_lints/src/utils/author.rs index f31c3fdb0959..bc4adf1596d4 100644 --- a/src/tools/clippy/clippy_lints/src/utils/author.rs +++ b/src/tools/clippy/clippy_lints/src/utils/author.rs @@ -395,11 +395,6 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> { } self.expr(field!(let_expr.init)); }, - ExprKind::Box(inner) => { - bind!(self, inner); - kind!("Box({inner})"); - self.expr(inner); - }, ExprKind::Array(elements) => { bind!(self, elements); kind!("Array({elements})"); diff --git a/src/tools/clippy/clippy_utils/src/check_proc_macro.rs b/src/tools/clippy/clippy_utils/src/check_proc_macro.rs index 43f0df145f0e..d3a6929f67e2 100644 --- a/src/tools/clippy/clippy_utils/src/check_proc_macro.rs +++ b/src/tools/clippy/clippy_utils/src/check_proc_macro.rs @@ -112,7 +112,6 @@ fn qpath_search_pat(path: &QPath<'_>) -> (Pat, Pat) { /// Get the search patterns to use for the given expression fn expr_search_pat(tcx: TyCtxt<'_>, e: &Expr<'_>) -> (Pat, Pat) { match e.kind { - ExprKind::Box(e) => (Pat::Str("box"), expr_search_pat(tcx, e).1), ExprKind::ConstBlock(_) => (Pat::Str("const"), Pat::Str("}")), ExprKind::Tup([]) => (Pat::Str(")"), Pat::Str("(")), ExprKind::Unary(UnOp::Deref, e) => (Pat::Str("*"), expr_search_pat(tcx, e).1), diff --git a/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs b/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs index ee2f816f181b..babbc7294a17 100644 --- a/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs +++ b/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs @@ -199,8 +199,7 @@ fn expr_eagerness<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> EagernessS }, // Memory allocation, custom operator, loop, or call to an unknown function - ExprKind::Box(_) - | ExprKind::Unary(..) + ExprKind::Unary(..) | ExprKind::Binary(..) | ExprKind::Loop(..) | ExprKind::Call(..) => self.eagerness = Lazy, diff --git a/src/tools/clippy/clippy_utils/src/hir_utils.rs b/src/tools/clippy/clippy_utils/src/hir_utils.rs index 0603755f8a94..3a6d23ca5c10 100644 --- a/src/tools/clippy/clippy_utils/src/hir_utils.rs +++ b/src/tools/clippy/clippy_utils/src/hir_utils.rs @@ -249,7 +249,6 @@ impl HirEqInterExpr<'_, '_, '_> { both(&li.label, &ri.label, |l, r| l.ident.name == r.ident.name) && both(le, re, |l, r| self.eq_expr(l, r)) }, - (&ExprKind::Box(l), &ExprKind::Box(r)) => self.eq_expr(l, r), (&ExprKind::Call(l_fun, l_args), &ExprKind::Call(r_fun, r_args)) => { self.inner.allow_side_effects && self.eq_expr(l_fun, r_fun) && self.eq_exprs(l_args, r_args) }, @@ -628,7 +627,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_expr(j); } }, - ExprKind::Box(e) | ExprKind::DropTemps(e) | ExprKind::Yield(e, _) => { + ExprKind::DropTemps(e) | ExprKind::Yield(e, _) => { self.hash_expr(e); }, ExprKind::Call(fun, args) => { diff --git a/src/tools/clippy/clippy_utils/src/sugg.rs b/src/tools/clippy/clippy_utils/src/sugg.rs index 85bf28b708b7..44cb5d5756ad 100644 --- a/src/tools/clippy/clippy_utils/src/sugg.rs +++ b/src/tools/clippy/clippy_utils/src/sugg.rs @@ -133,7 +133,6 @@ impl<'a> Sugg<'a> { match expr.kind { hir::ExprKind::AddrOf(..) - | hir::ExprKind::Box(..) | hir::ExprKind::If(..) | hir::ExprKind::Let(..) | hir::ExprKind::Closure { .. } diff --git a/src/tools/clippy/clippy_utils/src/visitors.rs b/src/tools/clippy/clippy_utils/src/visitors.rs index d27a20bd4dfa..86a93f64fb71 100644 --- a/src/tools/clippy/clippy_utils/src/visitors.rs +++ b/src/tools/clippy/clippy_utils/src/visitors.rs @@ -600,7 +600,6 @@ pub fn for_each_unconsumed_temporary<'tcx, B>( helper(typeck, false, e, f)?; }, ExprKind::Block(&Block { expr: Some(e), .. }, _) - | ExprKind::Box(e) | ExprKind::Cast(e, _) | ExprKind::Unary(_, e) => { helper(typeck, true, e, f)?; From cf0e78bd3bcfd1010f8933acc6e134410016f6f0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tomasz=20Mi=C4=85sko?= Date: Mon, 13 Mar 2023 00:00:00 +0000 Subject: [PATCH 05/57] Use index based drop loop for slices and arrays Instead of building two kinds of drop pair loops, of which only one will be eventually used at runtime in a given monomorphization, always use index based loop. --- .../rustc_mir_dataflow/src/elaborate_drops.rs | 133 +++++------------- ...[String].AddMovesForPackedDrops.before.mir | 80 +++-------- 2 files changed, 49 insertions(+), 164 deletions(-) diff --git a/compiler/rustc_mir_dataflow/src/elaborate_drops.rs b/compiler/rustc_mir_dataflow/src/elaborate_drops.rs index bd12087629c9..486275570bd1 100644 --- a/compiler/rustc_mir_dataflow/src/elaborate_drops.rs +++ b/compiler/rustc_mir_dataflow/src/elaborate_drops.rs @@ -655,26 +655,20 @@ where /// /// ```text /// loop-block: - /// can_go = cur == length_or_end + /// can_go = cur == len /// if can_go then succ else drop-block /// drop-block: - /// if ptr_based { - /// ptr = cur - /// cur = cur.offset(1) - /// } else { - /// ptr = &raw mut P[cur] - /// cur = cur + 1 - /// } + /// ptr = &raw mut P[cur] + /// cur = cur + 1 /// drop(ptr) /// ``` fn drop_loop( &mut self, succ: BasicBlock, cur: Local, - length_or_end: Place<'tcx>, + len: Local, ety: Ty<'tcx>, unwind: Unwind, - ptr_based: bool, ) -> BasicBlock { let copy = |place: Place<'tcx>| Operand::Copy(place); let move_ = |place: Place<'tcx>| Operand::Move(place); @@ -683,22 +677,19 @@ where let ptr_ty = tcx.mk_ptr(ty::TypeAndMut { ty: ety, mutbl: hir::Mutability::Mut }); let ptr = Place::from(self.new_temp(ptr_ty)); let can_go = Place::from(self.new_temp(tcx.types.bool)); - let one = self.constant_usize(1); - let (ptr_next, cur_next) = if ptr_based { - ( - Rvalue::Use(copy(cur.into())), - Rvalue::BinaryOp(BinOp::Offset, Box::new((move_(cur.into()), one))), - ) - } else { - ( - Rvalue::AddressOf(Mutability::Mut, tcx.mk_place_index(self.place, cur)), - Rvalue::BinaryOp(BinOp::Add, Box::new((move_(cur.into()), one))), - ) - }; let drop_block = BasicBlockData { - statements: vec![self.assign(ptr, ptr_next), self.assign(Place::from(cur), cur_next)], + statements: vec![ + self.assign( + ptr, + Rvalue::AddressOf(Mutability::Mut, tcx.mk_place_index(self.place, cur)), + ), + self.assign( + cur.into(), + Rvalue::BinaryOp(BinOp::Add, Box::new((move_(cur.into()), one))), + ), + ], is_cleanup: unwind.is_cleanup(), terminator: Some(Terminator { source_info: self.source_info, @@ -711,10 +702,7 @@ where let loop_block = BasicBlockData { statements: vec![self.assign( can_go, - Rvalue::BinaryOp( - BinOp::Eq, - Box::new((copy(Place::from(cur)), copy(length_or_end))), - ), + Rvalue::BinaryOp(BinOp::Eq, Box::new((copy(Place::from(cur)), copy(len.into())))), )], is_cleanup: unwind.is_cleanup(), terminator: Some(Terminator { @@ -738,13 +726,6 @@ where fn open_drop_for_array(&mut self, ety: Ty<'tcx>, opt_size: Option) -> BasicBlock { debug!("open_drop_for_array({:?}, {:?})", ety, opt_size); - - // if size_of::() == 0 { - // index_based_loop - // } else { - // ptr_based_loop - // } - let tcx = self.tcx(); if let Some(size) = opt_size { @@ -770,86 +751,36 @@ where } } - let move_ = |place: Place<'tcx>| Operand::Move(place); - let elem_size = Place::from(self.new_temp(tcx.types.usize)); - let len = Place::from(self.new_temp(tcx.types.usize)); - - let base_block = BasicBlockData { - statements: vec![ - self.assign(elem_size, Rvalue::NullaryOp(NullOp::SizeOf, ety)), - self.assign(len, Rvalue::Len(self.place)), - ], - is_cleanup: self.unwind.is_cleanup(), - terminator: Some(Terminator { - source_info: self.source_info, - kind: TerminatorKind::SwitchInt { - discr: move_(elem_size), - targets: SwitchTargets::static_if( - 0, - self.drop_loop_pair(ety, false, len), - self.drop_loop_pair(ety, true, len), - ), - }, - }), - }; - self.elaborator.patch().new_block(base_block) + self.drop_loop_pair(ety) } /// Creates a pair of drop-loops of `place`, which drops its contents, even - /// in the case of 1 panic. If `ptr_based`, creates a pointer loop, - /// otherwise create an index loop. - fn drop_loop_pair( - &mut self, - ety: Ty<'tcx>, - ptr_based: bool, - length: Place<'tcx>, - ) -> BasicBlock { - debug!("drop_loop_pair({:?}, {:?})", ety, ptr_based); + /// in the case of 1 panic. + fn drop_loop_pair(&mut self, ety: Ty<'tcx>) -> BasicBlock { + debug!("drop_loop_pair({:?})", ety); let tcx = self.tcx(); - let iter_ty = if ptr_based { tcx.mk_mut_ptr(ety) } else { tcx.types.usize }; + let len = self.new_temp(tcx.types.usize); + let cur = self.new_temp(tcx.types.usize); - let cur = self.new_temp(iter_ty); - let length_or_end = if ptr_based { Place::from(self.new_temp(iter_ty)) } else { length }; + let unwind = + self.unwind.map(|unwind| self.drop_loop(unwind, cur, len, ety, Unwind::InCleanup)); - let unwind = self.unwind.map(|unwind| { - self.drop_loop(unwind, cur, length_or_end, ety, Unwind::InCleanup, ptr_based) - }); + let loop_block = self.drop_loop(self.succ, cur, len, ety, unwind); - let loop_block = self.drop_loop(self.succ, cur, length_or_end, ety, unwind, ptr_based); - - let cur = Place::from(cur); - let drop_block_stmts = if ptr_based { - let tmp_ty = tcx.mk_mut_ptr(self.place_ty(self.place)); - let tmp = Place::from(self.new_temp(tmp_ty)); - // tmp = &raw mut P; - // cur = tmp as *mut T; - // end = Offset(cur, len); - let mir_cast_kind = ty::cast::mir_cast_kind(iter_ty, tmp_ty); - vec![ - self.assign(tmp, Rvalue::AddressOf(Mutability::Mut, self.place)), - self.assign(cur, Rvalue::Cast(mir_cast_kind, Operand::Move(tmp), iter_ty)), - self.assign( - length_or_end, - Rvalue::BinaryOp( - BinOp::Offset, - Box::new((Operand::Copy(cur), Operand::Move(length))), - ), - ), - ] - } else { - // cur = 0 (length already pushed) - let zero = self.constant_usize(0); - vec![self.assign(cur, Rvalue::Use(zero))] - }; - let drop_block = self.elaborator.patch().new_block(BasicBlockData { - statements: drop_block_stmts, + let zero = self.constant_usize(0); + let block = BasicBlockData { + statements: vec![ + self.assign(len.into(), Rvalue::Len(self.place)), + self.assign(cur.into(), Rvalue::Use(zero)), + ], is_cleanup: unwind.is_cleanup(), terminator: Some(Terminator { source_info: self.source_info, kind: TerminatorKind::Goto { target: loop_block }, }), - }); + }; + let drop_block = self.elaborator.patch().new_block(block); // FIXME(#34708): handle partially-dropped array/slice elements. let reset_block = self.drop_flag_reset_block(DropFlagMode::Deep, drop_block, unwind); self.drop_flag_test_block(reset_block, self.succ, unwind) diff --git a/tests/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir b/tests/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir index 391b00effacf..3884d29db417 100644 --- a/tests/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir +++ b/tests/mir-opt/slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir @@ -4,21 +4,13 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () { let mut _0: (); // return place in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 let mut _2: usize; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 let mut _3: usize; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _4: usize; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _5: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _6: bool; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _7: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _8: bool; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _9: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _10: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _11: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _12: bool; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _13: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _14: bool; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - let mut _15: *mut [std::string::String]; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + let mut _4: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + let mut _5: bool; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + let mut _6: *mut std::string::String; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + let mut _7: bool; // in scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 bb0: { - goto -> bb15; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + goto -> bb8; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } bb1: { @@ -30,72 +22,34 @@ fn std::ptr::drop_in_place(_1: *mut [String]) -> () { } bb3 (cleanup): { - _5 = &raw mut (*_1)[_4]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _4 = Add(move _4, const 1_usize); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - drop((*_5)) -> bb4; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _4 = &raw mut (*_1)[_3]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _3 = Add(move _3, const 1_usize); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + drop((*_4)) -> bb4; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } bb4 (cleanup): { - _6 = Eq(_4, _3); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - switchInt(move _6) -> [0: bb3, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _5 = Eq(_3, _2); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + switchInt(move _5) -> [0: bb3, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } bb5: { - _7 = &raw mut (*_1)[_4]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _4 = Add(move _4, const 1_usize); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - drop((*_7)) -> [return: bb6, unwind: bb4]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _6 = &raw mut (*_1)[_3]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _3 = Add(move _3, const 1_usize); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + drop((*_6)) -> [return: bb6, unwind: bb4]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } bb6: { - _8 = Eq(_4, _3); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - switchInt(move _8) -> [0: bb5, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _7 = Eq(_3, _2); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + switchInt(move _7) -> [0: bb5, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } bb7: { - _4 = const 0_usize; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _2 = Len((*_1)); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 + _3 = const 0_usize; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 goto -> bb6; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } bb8: { goto -> bb7; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 } - - bb9 (cleanup): { - _11 = _9; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _9 = Offset(move _9, const 1_usize); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - drop((*_11)) -> bb10; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } - - bb10 (cleanup): { - _12 = Eq(_9, _10); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - switchInt(move _12) -> [0: bb9, otherwise: bb2]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } - - bb11: { - _13 = _9; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _9 = Offset(move _9, const 1_usize); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - drop((*_13)) -> [return: bb12, unwind: bb10]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } - - bb12: { - _14 = Eq(_9, _10); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - switchInt(move _14) -> [0: bb11, otherwise: bb1]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } - - bb13: { - _15 = &raw mut (*_1); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _9 = move _15 as *mut std::string::String (PtrToPtr); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _10 = Offset(_9, move _3); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - goto -> bb12; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } - - bb14: { - goto -> bb13; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } - - bb15: { - _2 = SizeOf(std::string::String); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - _3 = Len((*_1)); // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - switchInt(move _2) -> [0: bb8, otherwise: bb14]; // scope 0 at $SRC_DIR/core/src/ptr/mod.rs:+0:1: +0:56 - } } From fb916a0132e7d476255a66d80a5ae6633a11d775 Mon Sep 17 00:00:00 2001 From: Taiki Endo Date: Wed, 15 Mar 2023 12:55:37 +0900 Subject: [PATCH 06/57] Fix riscv64 fuchsia LLVM target name --- compiler/rustc_target/src/spec/riscv64gc_unknown_fuchsia.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_target/src/spec/riscv64gc_unknown_fuchsia.rs b/compiler/rustc_target/src/spec/riscv64gc_unknown_fuchsia.rs index ab7c08958fa8..0585ed76fe81 100644 --- a/compiler/rustc_target/src/spec/riscv64gc_unknown_fuchsia.rs +++ b/compiler/rustc_target/src/spec/riscv64gc_unknown_fuchsia.rs @@ -2,7 +2,7 @@ use crate::spec::{CodeModel, SanitizerSet, Target, TargetOptions}; pub fn target() -> Target { Target { - llvm_target: "riscv64gc-unknown-fuchsia".into(), + llvm_target: "riscv64-unknown-fuchsia".into(), pointer_width: 64, data_layout: "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128".into(), arch: "riscv64".into(), From 86a5e3632c77d1c77d58ddb750a147998b5e4dbd Mon Sep 17 00:00:00 2001 From: Taiki Endo Date: Wed, 15 Mar 2023 13:30:45 +0900 Subject: [PATCH 07/57] Fix linker detection for clang with prefix --- compiler/rustc_codegen_ssa/src/back/link.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs index 8aa744ce9353..8bb143ed3da8 100644 --- a/compiler/rustc_codegen_ssa/src/back/link.rs +++ b/compiler/rustc_codegen_ssa/src/back/link.rs @@ -1199,7 +1199,7 @@ pub fn linker_and_flavor(sess: &Session) -> (PathBuf, LinkerFlavor) { .and_then(|(lhs, rhs)| rhs.chars().all(char::is_numeric).then_some(lhs)) .unwrap_or(stem); - // GCC can have an optional target prefix. + // GCC/Clang can have an optional target prefix. let flavor = if stem == "emcc" { LinkerFlavor::EmCc } else if stem == "gcc" @@ -1207,7 +1207,9 @@ pub fn linker_and_flavor(sess: &Session) -> (PathBuf, LinkerFlavor) { || stem == "g++" || stem.ends_with("-g++") || stem == "clang" + || stem.ends_with("-clang") || stem == "clang++" + || stem.ends_with("-clang++") { LinkerFlavor::from_cli(LinkerFlavorCli::Gcc, &sess.target) } else if stem == "wasm-ld" || stem.ends_with("-wasm-ld") { From 01d7af11e17887c4fc77902e77840d00309bf572 Mon Sep 17 00:00:00 2001 From: Mark Rousskov Date: Mon, 6 Mar 2023 09:38:31 -0500 Subject: [PATCH 08/57] Bump version placeholders --- compiler/rustc_feature/src/accepted.rs | 2 +- compiler/rustc_feature/src/active.rs | 6 +++--- library/core/src/error.rs | 2 +- library/core/src/ffi/c_str.rs | 8 ++++---- library/core/src/net/socket_addr.rs | 26 +++++++++++++------------- library/std/src/os/fd/owned.rs | 2 +- library/std/src/os/fd/raw.rs | 2 +- 7 files changed, 24 insertions(+), 24 deletions(-) diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs index ac93dd555b7a..3d644de16652 100644 --- a/compiler/rustc_feature/src/accepted.rs +++ b/compiler/rustc_feature/src/accepted.rs @@ -91,7 +91,7 @@ declare_features! ( /// Allows coercing non capturing closures to function pointers. (accepted, closure_to_fn_coercion, "1.19.0", Some(39817), None), /// Allows using the CMPXCHG16B target feature. - (accepted, cmpxchg16b_target_feature, "CURRENT_RUSTC_VERSION", Some(44839), None), + (accepted, cmpxchg16b_target_feature, "1.69.0", Some(44839), None), /// Allows usage of the `compile_error!` macro. (accepted, compile_error, "1.20.0", Some(40872), None), /// Allows `impl Trait` in function return types. diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs index c893b34b4ac2..e0a7c864b94d 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/active.rs @@ -161,7 +161,7 @@ declare_features! ( /// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic. (active, lang_items, "1.0.0", None, None), /// Allows the `multiple_supertrait_upcastable` lint. - (active, multiple_supertrait_upcastable, "CURRENT_RUSTC_VERSION", None, None), + (active, multiple_supertrait_upcastable, "1.69.0", None, None), /// Allows using `#[omit_gdb_pretty_printer_section]`. (active, omit_gdb_pretty_printer_section, "1.5.0", None, None), /// Allows using `#[prelude_import]` on glob `use` items. @@ -214,7 +214,7 @@ declare_features! ( /// Allows declaring with `#![needs_panic_runtime]` that a panic runtime is needed. (active, needs_panic_runtime, "1.10.0", Some(32837), None), /// Allows using `+bundled,+whole-archive` native libs. - (active, packed_bundled_libs, "CURRENT_RUSTC_VERSION", Some(108081), None), + (active, packed_bundled_libs, "1.69.0", Some(108081), None), /// Allows using the `#![panic_runtime]` attribute. (active, panic_runtime, "1.10.0", Some(32837), None), /// Allows using `#[rustc_allow_const_fn_unstable]`. @@ -468,7 +468,7 @@ declare_features! ( /// Allows using the `non_exhaustive_omitted_patterns` lint. (active, non_exhaustive_omitted_patterns_lint, "1.57.0", Some(89554), None), /// Allows `for` binders in where-clauses - (incomplete, non_lifetime_binders, "CURRENT_RUSTC_VERSION", Some(108185), None), + (incomplete, non_lifetime_binders, "1.69.0", Some(108185), None), /// Allows making `dyn Trait` well-formed even if `Trait` is not object safe. /// In that case, `dyn Trait: Trait` does not hold. Moreover, coercions and /// casts in safe Rust to `dyn Trait` for such a `Trait` is also forbidden. diff --git a/library/core/src/error.rs b/library/core/src/error.rs index 571bc4bcfd13..d4103183cd8b 100644 --- a/library/core/src/error.rs +++ b/library/core/src/error.rs @@ -489,7 +489,7 @@ impl Error for crate::char::CharTryFromError { #[stable(feature = "duration_checked_float", since = "1.66.0")] impl Error for crate::time::TryFromFloatSecsError {} -#[stable(feature = "cstr_from_bytes_until_nul", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")] impl Error for crate::ffi::FromBytesUntilNulError {} #[unstable(feature = "get_many_mut", issue = "104642")] diff --git a/library/core/src/ffi/c_str.rs b/library/core/src/ffi/c_str.rs index 87f077325f8b..fe8abdf7fad2 100644 --- a/library/core/src/ffi/c_str.rs +++ b/library/core/src/ffi/c_str.rs @@ -153,10 +153,10 @@ impl Error for FromBytesWithNulError { /// This error is created by the [`CStr::from_bytes_until_nul`] method. /// #[derive(Clone, PartialEq, Eq, Debug)] -#[stable(feature = "cstr_from_bytes_until_nul", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")] pub struct FromBytesUntilNulError(()); -#[stable(feature = "cstr_from_bytes_until_nul", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")] impl fmt::Display for FromBytesUntilNulError { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "data provided does not contain a nul") @@ -324,8 +324,8 @@ impl CStr { /// ``` /// #[rustc_allow_const_fn_unstable(const_slice_index)] - #[stable(feature = "cstr_from_bytes_until_nul", since = "CURRENT_RUSTC_VERSION")] - #[rustc_const_stable(feature = "cstr_from_bytes_until_nul", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")] + #[rustc_const_stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")] pub const fn from_bytes_until_nul(bytes: &[u8]) -> Result<&CStr, FromBytesUntilNulError> { let nul_pos = memchr::memchr(0, bytes); match nul_pos { diff --git a/library/core/src/net/socket_addr.rs b/library/core/src/net/socket_addr.rs index 0d25ab1d5e1a..2d48e2715800 100644 --- a/library/core/src/net/socket_addr.rs +++ b/library/core/src/net/socket_addr.rs @@ -121,7 +121,7 @@ impl SocketAddr { /// ``` #[stable(feature = "ip_addr", since = "1.7.0")] #[must_use] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn new(ip: IpAddr, port: u16) -> SocketAddr { match ip { IpAddr::V4(a) => SocketAddr::V4(SocketAddrV4::new(a, port)), @@ -141,7 +141,7 @@ impl SocketAddr { /// ``` #[must_use] #[stable(feature = "ip_addr", since = "1.7.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn ip(&self) -> IpAddr { match *self { SocketAddr::V4(ref a) => IpAddr::V4(*a.ip()), @@ -182,7 +182,7 @@ impl SocketAddr { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn port(&self) -> u16 { match *self { SocketAddr::V4(ref a) => a.port(), @@ -226,7 +226,7 @@ impl SocketAddr { /// ``` #[must_use] #[stable(feature = "sockaddr_checker", since = "1.16.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn is_ipv4(&self) -> bool { matches!(*self, SocketAddr::V4(_)) } @@ -248,7 +248,7 @@ impl SocketAddr { /// ``` #[must_use] #[stable(feature = "sockaddr_checker", since = "1.16.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn is_ipv6(&self) -> bool { matches!(*self, SocketAddr::V6(_)) } @@ -268,7 +268,7 @@ impl SocketAddrV4 { /// ``` #[stable(feature = "rust1", since = "1.0.0")] #[must_use] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn new(ip: Ipv4Addr, port: u16) -> SocketAddrV4 { SocketAddrV4 { ip, port } } @@ -285,7 +285,7 @@ impl SocketAddrV4 { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn ip(&self) -> &Ipv4Addr { &self.ip } @@ -318,7 +318,7 @@ impl SocketAddrV4 { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn port(&self) -> u16 { self.port } @@ -359,7 +359,7 @@ impl SocketAddrV6 { /// ``` #[stable(feature = "rust1", since = "1.0.0")] #[must_use] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn new(ip: Ipv6Addr, port: u16, flowinfo: u32, scope_id: u32) -> SocketAddrV6 { SocketAddrV6 { ip, port, flowinfo, scope_id } } @@ -376,7 +376,7 @@ impl SocketAddrV6 { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn ip(&self) -> &Ipv6Addr { &self.ip } @@ -409,7 +409,7 @@ impl SocketAddrV6 { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn port(&self) -> u16 { self.port } @@ -452,7 +452,7 @@ impl SocketAddrV6 { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn flowinfo(&self) -> u32 { self.flowinfo } @@ -492,7 +492,7 @@ impl SocketAddrV6 { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_stable(feature = "const_socketaddr", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "const_socketaddr", since = "1.69.0")] pub const fn scope_id(&self) -> u32 { self.scope_id } diff --git a/library/std/src/os/fd/owned.rs b/library/std/src/os/fd/owned.rs index 258919d53a4e..99a4e0b5106c 100644 --- a/library/std/src/os/fd/owned.rs +++ b/library/std/src/os/fd/owned.rs @@ -399,7 +399,7 @@ impl AsFd for crate::sync::Arc { } } -#[stable(feature = "asfd_rc", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "asfd_rc", since = "1.69.0")] impl AsFd for crate::rc::Rc { #[inline] fn as_fd(&self) -> BorrowedFd<'_> { diff --git a/library/std/src/os/fd/raw.rs b/library/std/src/os/fd/raw.rs index 0a4cefd20955..592e072ad908 100644 --- a/library/std/src/os/fd/raw.rs +++ b/library/std/src/os/fd/raw.rs @@ -254,7 +254,7 @@ impl AsRawFd for crate::sync::Arc { } } -#[stable(feature = "asfd_rc", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "asfd_rc", since = "1.69.0")] impl AsRawFd for crate::rc::Rc { #[inline] fn as_raw_fd(&self) -> RawFd { From bb8a0ffa23d235e06280ff0d0b96f0b0e763d35c Mon Sep 17 00:00:00 2001 From: Mark Rousskov Date: Tue, 7 Mar 2023 08:39:30 -0500 Subject: [PATCH 09/57] Bump to latest beta --- library/alloc/src/lib.rs | 4 +- library/core/src/error.rs | 2 +- library/core/src/fmt/mod.rs | 6 +- library/core/src/fmt/rt/v1.rs | 6 +- library/core/src/iter/mod.rs | 2 +- library/core/src/iter/traits/iterator.rs | 2 +- library/core/src/lib.rs | 5 +- library/core/src/marker.rs | 5 +- library/core/src/ops/try_trait.rs | 9 +- library/core/src/sync/atomic.rs | 45 +- src/stage0.json | 796 +++++++++++------------ 11 files changed, 429 insertions(+), 453 deletions(-) diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs index e9cc3875f683..5469261ef565 100644 --- a/library/alloc/src/lib.rs +++ b/library/alloc/src/lib.rs @@ -87,7 +87,7 @@ #![warn(missing_debug_implementations)] #![warn(missing_docs)] #![allow(explicit_outlives_requirements)] -#![cfg_attr(not(bootstrap), warn(multiple_supertrait_upcastable))] +#![warn(multiple_supertrait_upcastable)] // // Library features: #![feature(alloc_layout_extra)] @@ -195,7 +195,7 @@ #![feature(c_unwind)] #![feature(with_negative_coherence)] #![cfg_attr(test, feature(panic_update_hook))] -#![cfg_attr(not(bootstrap), feature(multiple_supertrait_upcastable))] +#![feature(multiple_supertrait_upcastable)] // // Rustdoc features: #![feature(doc_cfg)] diff --git a/library/core/src/error.rs b/library/core/src/error.rs index d4103183cd8b..11cb08275786 100644 --- a/library/core/src/error.rs +++ b/library/core/src/error.rs @@ -28,7 +28,7 @@ use crate::fmt::{Debug, Display}; #[stable(feature = "rust1", since = "1.0.0")] #[cfg_attr(not(test), rustc_diagnostic_item = "Error")] #[rustc_has_incoherent_inherent_impls] -#[cfg_attr(not(bootstrap), allow(multiple_supertrait_upcastable))] +#[allow(multiple_supertrait_upcastable)] pub trait Error: Debug + Display { /// The lower-level source of this error, if any. /// diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs index c9821bf8109a..bb46594fe852 100644 --- a/library/core/src/fmt/mod.rs +++ b/library/core/src/fmt/mod.rs @@ -267,7 +267,7 @@ extern "C" { /// family of functions. It contains a function to format the given value. At /// compile time it is ensured that the function and the value have the correct /// types, and then this struct is used to canonicalize arguments to one type. -#[cfg_attr(not(bootstrap), lang = "format_argument")] +#[lang = "format_argument"] #[derive(Copy, Clone)] #[allow(missing_debug_implementations)] #[unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")] @@ -280,7 +280,7 @@ pub struct ArgumentV1<'a> { /// This struct represents the unsafety of constructing an `Arguments`. /// It exists, rather than an unsafe function, in order to simplify the expansion /// of `format_args!(..)` and reduce the scope of the `unsafe` block. -#[cfg_attr(not(bootstrap), lang = "format_unsafe_arg")] +#[lang = "format_unsafe_arg"] #[allow(missing_debug_implementations)] #[doc(hidden)] #[unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")] @@ -475,7 +475,7 @@ impl<'a> Arguments<'a> { /// ``` /// /// [`format()`]: ../../std/fmt/fn.format.html -#[cfg_attr(not(bootstrap), lang = "format_arguments")] +#[lang = "format_arguments"] #[stable(feature = "rust1", since = "1.0.0")] #[derive(Copy, Clone)] pub struct Arguments<'a> { diff --git a/library/core/src/fmt/rt/v1.rs b/library/core/src/fmt/rt/v1.rs index 11a50951a75d..6d70796f7071 100644 --- a/library/core/src/fmt/rt/v1.rs +++ b/library/core/src/fmt/rt/v1.rs @@ -5,7 +5,7 @@ //! these can be statically allocated and are slightly optimized for the runtime #![allow(missing_debug_implementations)] -#[cfg_attr(not(bootstrap), lang = "format_placeholder")] +#[lang = "format_placeholder"] #[derive(Copy, Clone)] // FIXME: Rename this to Placeholder pub struct Argument { @@ -37,7 +37,7 @@ impl Argument { } /// Possible alignments that can be requested as part of a formatting directive. -#[cfg_attr(not(bootstrap), lang = "format_alignment")] +#[lang = "format_alignment"] #[derive(Copy, Clone, PartialEq, Eq)] pub enum Alignment { /// Indication that contents should be left-aligned. @@ -51,7 +51,7 @@ pub enum Alignment { } /// Used by [width](https://doc.rust-lang.org/std/fmt/#width) and [precision](https://doc.rust-lang.org/std/fmt/#precision) specifiers. -#[cfg_attr(not(bootstrap), lang = "format_count")] +#[lang = "format_count"] #[derive(Copy, Clone)] pub enum Count { /// Specified with a literal number, stores the value diff --git a/library/core/src/iter/mod.rs b/library/core/src/iter/mod.rs index ae00232c12c8..de638552fa37 100644 --- a/library/core/src/iter/mod.rs +++ b/library/core/src/iter/mod.rs @@ -278,7 +278,7 @@ //! //! ``` //! # #![allow(unused_must_use)] -//! # #![cfg_attr(not(bootstrap), allow(map_unit_fn))] +//! # #![allow(map_unit_fn)] //! let v = vec![1, 2, 3, 4, 5]; //! v.iter().map(|x| println!("{x}")); //! ``` diff --git a/library/core/src/iter/traits/iterator.rs b/library/core/src/iter/traits/iterator.rs index b8e7d0a68da5..8e7c0c4442f9 100644 --- a/library/core/src/iter/traits/iterator.rs +++ b/library/core/src/iter/traits/iterator.rs @@ -69,7 +69,7 @@ fn _assert_is_object_safe(_: &dyn Iterator) {} #[doc(notable_trait)] #[rustc_diagnostic_item = "Iterator"] #[must_use = "iterators are lazy and do nothing unless consumed"] -#[cfg_attr(not(bootstrap), const_trait)] +#[const_trait] pub trait Iterator { /// The type of the elements being iterated over. #[rustc_diagnostic_item = "IteratorItem"] diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs index 24bad799fc85..526232f44ee1 100644 --- a/library/core/src/lib.rs +++ b/library/core/src/lib.rs @@ -95,7 +95,7 @@ #![warn(missing_docs)] #![allow(explicit_outlives_requirements)] #![allow(incomplete_features)] -#![cfg_attr(not(bootstrap), warn(multiple_supertrait_upcastable))] +#![warn(multiple_supertrait_upcastable)] // // Library features: #![feature(const_align_offset)] @@ -241,7 +241,7 @@ #![feature(unsized_fn_params)] #![feature(asm_const)] #![feature(const_transmute_copy)] -#![cfg_attr(not(bootstrap), feature(multiple_supertrait_upcastable))] +#![feature(multiple_supertrait_upcastable)] // // Target features: #![feature(arm_target_feature)] @@ -254,7 +254,6 @@ #![feature(sse4a_target_feature)] #![feature(tbm_target_feature)] #![feature(wasm_target_feature)] -#![cfg_attr(bootstrap, feature(cmpxchg16b_target_feature))] // allow using `core::` in intra-doc links #[allow(unused_extern_crates)] diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs index 427146941ade..9a0fd1f5f517 100644 --- a/library/core/src/marker.rs +++ b/library/core/src/marker.rs @@ -97,7 +97,7 @@ unsafe impl Send for &T {} #[fundamental] // for Default, for example, which requires that `[T]: !Default` be evaluatable #[rustc_specialization_trait] #[rustc_deny_explicit_impl] -#[cfg_attr(not(bootstrap), rustc_coinductive)] +#[rustc_coinductive] pub trait Sized { // Empty. } @@ -877,8 +877,7 @@ pub trait Tuple {} /// All types that have the same size and alignment as a `usize` or /// `*const ()` automatically implement this trait. #[unstable(feature = "pointer_like_trait", issue = "none")] -#[cfg_attr(bootstrap, lang = "pointer_sized")] -#[cfg_attr(not(bootstrap), lang = "pointer_like")] +#[lang = "pointer_like"] #[rustc_on_unimplemented( message = "`{Self}` needs to have the same alignment and size as a pointer", label = "`{Self}` needs to be a pointer-like type" diff --git a/library/core/src/ops/try_trait.rs b/library/core/src/ops/try_trait.rs index 86aa1e4fd20b..c254803fbf65 100644 --- a/library/core/src/ops/try_trait.rs +++ b/library/core/src/ops/try_trait.rs @@ -392,14 +392,7 @@ impl NeverShortCircuit { pub fn wrap_mut_2( mut f: impl ~const FnMut(A, B) -> T, ) -> impl ~const FnMut(A, B) -> Self { - cfg_if! { - if #[cfg(bootstrap)] { - #[allow(unused_parens)] - (const move |a, b| NeverShortCircuit(f(a, b))) - } else { - const move |a, b| NeverShortCircuit(f(a, b)) - } - } + const move |a, b| NeverShortCircuit(f(a, b)) } } diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs index 123561873a66..2f6b1c74da08 100644 --- a/library/core/src/sync/atomic.rs +++ b/library/core/src/sync/atomic.rs @@ -1951,8 +1951,7 @@ macro_rules! if_not_8_bit { ($_:ident, $($tt:tt)*) => { $($tt)* }; } -#[cfg_attr(not(bootstrap), cfg(target_has_atomic_load_store))] -#[cfg_attr(bootstrap, cfg(target_has_atomic_load_store = "8"))] +#[cfg(target_has_atomic_load_store)] macro_rules! atomic_int { ($cfg_cas:meta, $cfg_align:meta, @@ -3125,8 +3124,7 @@ atomic_int_ptr_sized! { } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] fn strongest_failure_ordering(order: Ordering) -> Ordering { match order { Release => Relaxed, @@ -3168,8 +3166,7 @@ unsafe fn atomic_load(dst: *const T, order: Ordering) -> T { } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_swap(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_swap`. @@ -3186,8 +3183,7 @@ unsafe fn atomic_swap(dst: *mut T, val: T, order: Ordering) -> T { /// Returns the previous value (like __sync_fetch_and_add). #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_add(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_add`. @@ -3204,8 +3200,7 @@ unsafe fn atomic_add(dst: *mut T, val: T, order: Ordering) -> T { /// Returns the previous value (like __sync_fetch_and_sub). #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_sub(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_sub`. @@ -3221,8 +3216,7 @@ unsafe fn atomic_sub(dst: *mut T, val: T, order: Ordering) -> T { } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_compare_exchange( dst: *mut T, @@ -3257,8 +3251,7 @@ unsafe fn atomic_compare_exchange( } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_compare_exchange_weak( dst: *mut T, @@ -3293,8 +3286,7 @@ unsafe fn atomic_compare_exchange_weak( } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_and(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_and` @@ -3310,8 +3302,7 @@ unsafe fn atomic_and(dst: *mut T, val: T, order: Ordering) -> T { } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_nand(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_nand` @@ -3327,8 +3318,7 @@ unsafe fn atomic_nand(dst: *mut T, val: T, order: Ordering) -> T { } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_or(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_or` @@ -3344,8 +3334,7 @@ unsafe fn atomic_or(dst: *mut T, val: T, order: Ordering) -> T { } #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_xor(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_xor` @@ -3362,8 +3351,7 @@ unsafe fn atomic_xor(dst: *mut T, val: T, order: Ordering) -> T { /// returns the max value (signed comparison) #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_max(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_max` @@ -3380,8 +3368,7 @@ unsafe fn atomic_max(dst: *mut T, val: T, order: Ordering) -> T { /// returns the min value (signed comparison) #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_min(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_min` @@ -3398,8 +3385,7 @@ unsafe fn atomic_min(dst: *mut T, val: T, order: Ordering) -> T { /// returns the max value (unsigned comparison) #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_umax(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_umax` @@ -3416,8 +3402,7 @@ unsafe fn atomic_umax(dst: *mut T, val: T, order: Ordering) -> T { /// returns the min value (unsigned comparison) #[inline] -#[cfg_attr(not(bootstrap), cfg(target_has_atomic))] -#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))] +#[cfg(target_has_atomic)] #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces unsafe fn atomic_umin(dst: *mut T, val: T, order: Ordering) -> T { // SAFETY: the caller must uphold the safety contract for `atomic_umin` diff --git a/src/stage0.json b/src/stage0.json index 46f70b1ef4b0..9250d9c28046 100644 --- a/src/stage0.json +++ b/src/stage0.json @@ -17,409 +17,409 @@ "tool is 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"dist/2023-03-07/rustfmt-nightly-x86_64-unknown-netbsd.tar.xz": "53c88668c3c9ab6df7f3cace825a45616909bb28628ee8636a8ce86b77cf4bb5" } } From df0be2d65eff57a7de8766a78d4d03a2de34f95f Mon Sep 17 00:00:00 2001 From: Mark Rousskov Date: Wed, 15 Mar 2023 09:05:25 -0400 Subject: [PATCH 10/57] Bump to latest rustc-perf This removes a dependency on ntapi 0.3.x which failed to compiled with latest beta. rust-lang/rustc-perf@93dc60d995a57c3cab8d7fb90a6fc7f9f7c5cd0f removed that dependency in the upstream rustc-perf. --- src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile | 4 ++-- src/ci/stage-build.py | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile b/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile index 5feba4e0605e..04fdb15f5acb 100644 --- a/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile +++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile @@ -54,8 +54,8 @@ COPY host-x86_64/dist-x86_64-linux/build-clang.sh /tmp/ RUN ./build-clang.sh ENV CC=clang CXX=clang++ -# rustc-perf version from 2022-07-22 -ENV PERF_COMMIT 3c253134664fdcba862c539d37f0de18557a9a4c +# rustc-perf version from 2023-03-15 +ENV PERF_COMMIT 9dfaa35193154b690922347ee1141a06ec87a199 RUN curl -LS -o perf.zip https://github.com/rust-lang/rustc-perf/archive/$PERF_COMMIT.zip && \ unzip perf.zip && \ mv rustc-perf-$PERF_COMMIT rustc-perf && \ diff --git a/src/ci/stage-build.py b/src/ci/stage-build.py index fe3083dc31e4..d4d80e8f77c5 100644 --- a/src/ci/stage-build.py +++ b/src/ci/stage-build.py @@ -175,8 +175,8 @@ class WindowsPipeline(Pipeline): return super().rustc_stage_2().with_suffix(".exe") def build_rustc_perf(self): - # rustc-perf version from 2022-07-22 - perf_commit = "3c253134664fdcba862c539d37f0de18557a9a4c" + # rustc-perf version from 2023-03-15 + perf_commit = "9dfaa35193154b690922347ee1141a06ec87a199" rustc_perf_zip_path = self.opt_artifacts() / "perf.zip" def download_rustc_perf(): From 26c4c1ea97d16863dbbaf2688d5dc7ce1ca3680b Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Fri, 10 Mar 2023 17:48:11 -0300 Subject: [PATCH 11/57] Rename impl_trait_in_trait_parent to impl_trait_in_trait_parent_fn --- compiler/rustc_hir_analysis/src/check/check.rs | 2 +- compiler/rustc_hir_analysis/src/check/wfcheck.rs | 2 +- compiler/rustc_metadata/src/rmeta/encoder.rs | 2 +- compiler/rustc_middle/src/ty/mod.rs | 2 +- compiler/rustc_middle/src/ty/sty.rs | 2 +- compiler/rustc_privacy/src/lib.rs | 2 +- compiler/rustc_trait_selection/src/traits/project.rs | 4 ++-- compiler/rustc_ty_utils/src/assoc.rs | 2 +- compiler/rustc_ty_utils/src/ty.rs | 2 +- 9 files changed, 10 insertions(+), 10 deletions(-) diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs index 14dc9d891800..872fec3954b2 100644 --- a/compiler/rustc_hir_analysis/src/check/check.rs +++ b/compiler/rustc_hir_analysis/src/check/check.rs @@ -557,7 +557,7 @@ fn check_item_type(tcx: TyCtxt<'_>, id: hir::ItemId) { check_opaque(tcx, id); } DefKind::ImplTraitPlaceholder => { - let parent = tcx.impl_trait_in_trait_parent(id.owner_id.to_def_id()); + let parent = tcx.impl_trait_in_trait_parent_fn(id.owner_id.to_def_id()); // Only check the validity of this opaque type if the function has a default body if let hir::Node::TraitItem(hir::TraitItem { kind: hir::TraitItemKind::Fn(_, hir::TraitFn::Provided(_)), diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs index 28f0924d1d68..eab5cae9f26f 100644 --- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs +++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs @@ -1550,7 +1550,7 @@ fn check_return_position_impl_trait_in_trait_bounds<'tcx>( if let ty::GenericArgKind::Type(ty) = arg.unpack() && let ty::Alias(ty::Opaque, proj) = ty.kind() && tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder - && tcx.impl_trait_in_trait_parent(proj.def_id) == fn_def_id.to_def_id() + && tcx.impl_trait_in_trait_parent_fn(proj.def_id) == fn_def_id.to_def_id() { let span = tcx.def_span(proj.def_id); let bounds = wfcx.tcx().explicit_item_bounds(proj.def_id); diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs index 9649ce2c5a77..c778574b2c57 100644 --- a/compiler/rustc_metadata/src/rmeta/encoder.rs +++ b/compiler/rustc_metadata/src/rmeta/encoder.rs @@ -1028,7 +1028,7 @@ fn should_encode_type(tcx: TyCtxt<'_>, def_id: LocalDefId, def_kind: DefKind) -> | DefKind::InlineConst => true, DefKind::ImplTraitPlaceholder => { - let parent_def_id = tcx.impl_trait_in_trait_parent(def_id.to_def_id()); + let parent_def_id = tcx.impl_trait_in_trait_parent_fn(def_id.to_def_id()); let assoc_item = tcx.associated_item(parent_def_id); match assoc_item.container { // Always encode an RPIT in an impl fn, since it always has a body diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index 04d7de531c26..71bd4be66500 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -2552,7 +2552,7 @@ impl<'tcx> TyCtxt<'tcx> { matches!(self.trait_of_item(def_id), Some(trait_id) if self.has_attr(trait_id, sym::const_trait)) } - pub fn impl_trait_in_trait_parent(self, mut def_id: DefId) -> DefId { + pub fn impl_trait_in_trait_parent_fn(self, mut def_id: DefId) -> DefId { while let def_kind = self.def_kind(def_id) && def_kind != DefKind::AssocFn { debug_assert_eq!(def_kind, DefKind::ImplTraitPlaceholder); def_id = self.parent(def_id); diff --git a/compiler/rustc_middle/src/ty/sty.rs b/compiler/rustc_middle/src/ty/sty.rs index 52d114bae300..4c606b939b25 100644 --- a/compiler/rustc_middle/src/ty/sty.rs +++ b/compiler/rustc_middle/src/ty/sty.rs @@ -1288,7 +1288,7 @@ impl<'tcx> AliasTy<'tcx> { match tcx.def_kind(self.def_id) { DefKind::AssocTy | DefKind::AssocConst => tcx.parent(self.def_id), DefKind::ImplTraitPlaceholder => { - tcx.parent(tcx.impl_trait_in_trait_parent(self.def_id)) + tcx.parent(tcx.impl_trait_in_trait_parent_fn(self.def_id)) } kind => bug!("expected a projection AliasTy; found {kind:?}"), } diff --git a/compiler/rustc_privacy/src/lib.rs b/compiler/rustc_privacy/src/lib.rs index ef7c68c1a335..cd6764458984 100644 --- a/compiler/rustc_privacy/src/lib.rs +++ b/compiler/rustc_privacy/src/lib.rs @@ -132,7 +132,7 @@ where projection.trait_ref_and_own_substs(tcx) } else { // HACK(RPITIT): Remove this when RPITITs are lowered to regular assoc tys - let def_id = tcx.impl_trait_in_trait_parent(projection.def_id); + let def_id = tcx.impl_trait_in_trait_parent_fn(projection.def_id); let trait_generics = tcx.generics_of(def_id); ( tcx.mk_trait_ref(def_id, projection.substs.truncate_to(tcx, trait_generics)), diff --git a/compiler/rustc_trait_selection/src/traits/project.rs b/compiler/rustc_trait_selection/src/traits/project.rs index 01075d7c55ae..4a439134d8ab 100644 --- a/compiler/rustc_trait_selection/src/traits/project.rs +++ b/compiler/rustc_trait_selection/src/traits/project.rs @@ -1295,7 +1295,7 @@ fn assemble_candidate_for_impl_trait_in_trait<'cx, 'tcx>( ) { let tcx = selcx.tcx(); if tcx.def_kind(obligation.predicate.def_id) == DefKind::ImplTraitPlaceholder { - let trait_fn_def_id = tcx.impl_trait_in_trait_parent(obligation.predicate.def_id); + let trait_fn_def_id = tcx.impl_trait_in_trait_parent_fn(obligation.predicate.def_id); let trait_def_id = tcx.parent(trait_fn_def_id); let trait_substs = @@ -2193,7 +2193,7 @@ fn confirm_impl_trait_in_trait_candidate<'tcx>( let tcx = selcx.tcx(); let mut obligations = data.nested; - let trait_fn_def_id = tcx.impl_trait_in_trait_parent(obligation.predicate.def_id); + let trait_fn_def_id = tcx.impl_trait_in_trait_parent_fn(obligation.predicate.def_id); let leaf_def = match specialization_graph::assoc_def(tcx, data.impl_def_id, trait_fn_def_id) { Ok(assoc_ty) => assoc_ty, Err(guar) => return Progress::error(tcx, guar), diff --git a/compiler/rustc_ty_utils/src/assoc.rs b/compiler/rustc_ty_utils/src/assoc.rs index a28161245384..aba8f49b691c 100644 --- a/compiler/rustc_ty_utils/src/assoc.rs +++ b/compiler/rustc_ty_utils/src/assoc.rs @@ -244,7 +244,7 @@ fn associated_item_for_impl_trait_in_trait( tcx: TyCtxt<'_>, opaque_ty_def_id: LocalDefId, ) -> LocalDefId { - let fn_def_id = tcx.impl_trait_in_trait_parent(opaque_ty_def_id.to_def_id()); + let fn_def_id = tcx.impl_trait_in_trait_parent_fn(opaque_ty_def_id.to_def_id()); let trait_def_id = tcx.parent(fn_def_id); assert_eq!(tcx.def_kind(trait_def_id), DefKind::Trait); diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs index d41bf603983c..7512663a9fb8 100644 --- a/compiler/rustc_ty_utils/src/ty.rs +++ b/compiler/rustc_ty_utils/src/ty.rs @@ -269,7 +269,7 @@ impl<'tcx> TypeVisitor> for ImplTraitInTraitFinder<'_, 'tcx> { fn visit_ty(&mut self, ty: Ty<'tcx>) -> std::ops::ControlFlow { if let ty::Alias(ty::Projection, alias_ty) = *ty.kind() && self.tcx.def_kind(alias_ty.def_id) == DefKind::ImplTraitPlaceholder - && self.tcx.impl_trait_in_trait_parent(alias_ty.def_id) == self.fn_def_id + && self.tcx.impl_trait_in_trait_parent_fn(alias_ty.def_id) == self.fn_def_id && self.seen.insert(alias_ty.def_id) { // We have entered some binders as we've walked into the From 39ffe9699a2b24c72bebd1c952daf31707b68106 Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Tue, 14 Mar 2023 14:29:06 -0300 Subject: [PATCH 12/57] Properly implement generics_of for traits --- compiler/rustc_ty_utils/src/assoc.rs | 33 ++++++++++++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-) diff --git a/compiler/rustc_ty_utils/src/assoc.rs b/compiler/rustc_ty_utils/src/assoc.rs index aba8f49b691c..fae5997e3949 100644 --- a/compiler/rustc_ty_utils/src/assoc.rs +++ b/compiler/rustc_ty_utils/src/assoc.rs @@ -289,8 +289,37 @@ fn associated_item_for_impl_trait_in_trait( InternalSubsts::identity_for_item(tcx, opaque_ty_def_id.to_def_id()), ))); - // Copy generics_of of the opaque. - trait_assoc_ty.generics_of(tcx.generics_of(opaque_ty_def_id).clone()); + // Copy generics_of of the opaque type item but the trait is the parent. + trait_assoc_ty.generics_of({ + let opaque_ty_generics = tcx.generics_of(opaque_ty_def_id); + let opaque_ty_parent_count = opaque_ty_generics.parent_count; + let mut params = opaque_ty_generics.params.clone(); + + let parent_generics = tcx.generics_of(trait_def_id); + let parent_count = parent_generics.parent_count + parent_generics.params.len(); + + let mut trait_fn_params = tcx.generics_of(fn_def_id).params.clone(); + + for param in &mut params { + param.index = param.index + parent_count as u32 + trait_fn_params.len() as u32 + - opaque_ty_parent_count as u32; + } + + trait_fn_params.extend(params); + params = trait_fn_params; + + let param_def_id_to_index = + params.iter().map(|param| (param.def_id, param.index)).collect(); + + ty::Generics { + parent: Some(trait_def_id), + parent_count, + params, + param_def_id_to_index, + has_self: false, + has_late_bound_regions: opaque_ty_generics.has_late_bound_regions, + } + }); // There are no predicates for the synthesized associated type. trait_assoc_ty.explicit_predicates_of(ty::GenericPredicates { From 39d19ca9f22901a9460b5dcd9897bed969809fc4 Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Mon, 13 Mar 2023 18:21:00 -0300 Subject: [PATCH 13/57] Make impl_trait_in_trait_container consider newly generated RPITITs --- compiler/rustc_middle/src/ty/mod.rs | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index 71bd4be66500..c6db65e74378 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -2553,11 +2553,17 @@ impl<'tcx> TyCtxt<'tcx> { } pub fn impl_trait_in_trait_parent_fn(self, mut def_id: DefId) -> DefId { - while let def_kind = self.def_kind(def_id) && def_kind != DefKind::AssocFn { - debug_assert_eq!(def_kind, DefKind::ImplTraitPlaceholder); - def_id = self.parent(def_id); + match self.opt_rpitit_info(def_id) { + Some(ImplTraitInTraitData::Trait { fn_def_id, .. }) + | Some(ImplTraitInTraitData::Impl { fn_def_id, .. }) => fn_def_id, + None => { + while let def_kind = self.def_kind(def_id) && def_kind != DefKind::AssocFn { + debug_assert_eq!(def_kind, DefKind::ImplTraitPlaceholder); + def_id = self.parent(def_id); + } + def_id + } } - def_id } pub fn impl_method_has_trait_impl_trait_tys(self, def_id: DefId) -> bool { From 0b9b7dd5c6771ab26dd7cab4cf96f8f5c2059b1a Mon Sep 17 00:00:00 2001 From: Augie Fackler Date: Wed, 15 Mar 2023 14:22:26 -0400 Subject: [PATCH 14/57] inherit_overflow: adapt pattern to also work with v0 mangling This test was failing under new-symbol-mangling = true. Adapt pattern to work in both cases. Related to #106002 from December. --- tests/codegen/inherit_overflow.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/codegen/inherit_overflow.rs b/tests/codegen/inherit_overflow.rs index 0b0b890b2c99..39909d7abfd4 100644 --- a/tests/codegen/inherit_overflow.rs +++ b/tests/codegen/inherit_overflow.rs @@ -4,7 +4,7 @@ //[NOASSERT] compile-flags: -Coverflow-checks=off // CHECK-LABEL: define{{.*}} @assertion -// ASSERT: call void @_ZN4core9panicking5panic17h +// ASSERT: call void @{{.*4core9panicking5panic}} // NOASSERT: ret i8 0 #[no_mangle] pub fn assertion() -> u8 { From e41491fe05a6a11a89b7c494ea0d95d3b32a6b0f Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Tue, 14 Mar 2023 18:28:48 -0300 Subject: [PATCH 15/57] ImplTraitPlaceholder -> is_impl_trait_in_trait --- compiler/rustc_hir_analysis/src/check/wfcheck.rs | 8 ++++++-- compiler/rustc_hir_analysis/src/variance/mod.rs | 12 ++++++++---- compiler/rustc_hir_typeck/src/closure.rs | 14 +++++--------- .../rustc_infer/src/infer/error_reporting/mod.rs | 13 +++++++------ .../src/infer/error_reporting/note_and_explain.rs | 8 ++++---- compiler/rustc_infer/src/infer/opaque_types.rs | 8 ++------ compiler/rustc_middle/src/ty/mod.rs | 4 ++++ compiler/rustc_middle/src/ty/print/pretty.rs | 2 +- compiler/rustc_ty_utils/src/ty.rs | 4 +++- src/librustdoc/clean/mod.rs | 2 +- 10 files changed, 41 insertions(+), 34 deletions(-) diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs index eab5cae9f26f..1687aff56d68 100644 --- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs +++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs @@ -1,7 +1,6 @@ use crate::autoderef::Autoderef; use crate::constrained_generic_params::{identify_constrained_generic_params, Parameter}; -use hir::def::DefKind; use rustc_ast as ast; use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet}; use rustc_errors::{pluralize, struct_span_err, Applicability, DiagnosticBuilder, ErrorGuaranteed}; @@ -1549,7 +1548,12 @@ fn check_return_position_impl_trait_in_trait_bounds<'tcx>( for arg in fn_output.walk() { if let ty::GenericArgKind::Type(ty) = arg.unpack() && let ty::Alias(ty::Opaque, proj) = ty.kind() - && tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty) we should just check + // `tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder`. Right now + // `check_associated_type_bounds` is not called for RPITITs synthesized as + // associated types. See `check_mod_type_wf` to see how synthesized associated + // types are missed due to iterating over HIR. + && tcx.is_impl_trait_in_trait(proj.def_id) && tcx.impl_trait_in_trait_parent_fn(proj.def_id) == fn_def_id.to_def_id() { let span = tcx.def_span(proj.def_id); diff --git a/compiler/rustc_hir_analysis/src/variance/mod.rs b/compiler/rustc_hir_analysis/src/variance/mod.rs index a8b7699b6675..361e8948e851 100644 --- a/compiler/rustc_hir_analysis/src/variance/mod.rs +++ b/compiler/rustc_hir_analysis/src/variance/mod.rs @@ -112,10 +112,14 @@ fn variance_of_opaque(tcx: TyCtxt<'_>, item_def_id: LocalDefId) -> &[ty::Varianc fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow { match t.kind() { ty::Alias(_, ty::AliasTy { def_id, substs, .. }) - if matches!( - self.tcx.def_kind(*def_id), - DefKind::OpaqueTy | DefKind::ImplTraitPlaceholder - ) => + if matches!(self.tcx.def_kind(*def_id), DefKind::OpaqueTy) => + { + self.visit_opaque(*def_id, substs) + } + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty) check whether this is necessary + // at all for RPITITs. + ty::Alias(_, ty::AliasTy { def_id, substs, .. }) + if self.tcx.is_impl_trait_in_trait(*def_id) => { self.visit_opaque(*def_id, substs) } diff --git a/compiler/rustc_hir_typeck/src/closure.rs b/compiler/rustc_hir_typeck/src/closure.rs index 773ac0e40c57..c47a00139bbd 100644 --- a/compiler/rustc_hir_typeck/src/closure.rs +++ b/compiler/rustc_hir_typeck/src/closure.rs @@ -2,7 +2,6 @@ use super::{check_fn, Expectation, FnCtxt, GeneratorTypes}; -use hir::def::DefKind; use rustc_errors::ErrorGuaranteed; use rustc_hir as hir; use rustc_hir::lang_items::LangItem; @@ -713,14 +712,11 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { .subst_iter_copied(self.tcx, substs) .find_map(|(p, s)| get_future_output(p, s))?, ty::Error(_) => return None, - ty::Alias(ty::Projection, proj) - if self.tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder => - { - self.tcx - .bound_explicit_item_bounds(proj.def_id) - .subst_iter_copied(self.tcx, proj.substs) - .find_map(|(p, s)| get_future_output(p, s))? - } + ty::Alias(ty::Projection, proj) if self.tcx.is_impl_trait_in_trait(proj.def_id) => self + .tcx + .bound_explicit_item_bounds(proj.def_id) + .subst_iter_copied(self.tcx, proj.substs) + .find_map(|(p, s)| get_future_output(p, s))?, _ => span_bug!( self.tcx.def_span(expr_def_id), "async fn generator return type not an inference variable: {ret_ty}" diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs index 8a2b800af0e8..c89a45dbb00f 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs @@ -359,10 +359,12 @@ impl<'tcx> InferCtxt<'tcx> { pub fn get_impl_future_output_ty(&self, ty: Ty<'tcx>) -> Option> { let (def_id, substs) = match *ty.kind() { ty::Alias(_, ty::AliasTy { def_id, substs, .. }) - if matches!( - self.tcx.def_kind(def_id), - DefKind::OpaqueTy | DefKind::ImplTraitPlaceholder - ) => + if matches!(self.tcx.def_kind(def_id), DefKind::OpaqueTy) => + { + (def_id, substs) + } + ty::Alias(_, ty::AliasTy { def_id, substs, .. }) + if self.tcx.is_impl_trait_in_trait(def_id) => { (def_id, substs) } @@ -1754,8 +1756,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { ) } (true, ty::Alias(ty::Projection, proj)) - if self.tcx.def_kind(proj.def_id) - == DefKind::ImplTraitPlaceholder => + if self.tcx.is_impl_trait_in_trait(proj.def_id) => { let sm = self.tcx.sess.source_map(); let pos = sm.lookup_char_pos(self.tcx.def_span(proj.def_id).lo()); diff --git a/compiler/rustc_infer/src/infer/error_reporting/note_and_explain.rs b/compiler/rustc_infer/src/infer/error_reporting/note_and_explain.rs index b33729d0be5c..b38bbdfe7bb8 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/note_and_explain.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/note_and_explain.rs @@ -1,7 +1,7 @@ use super::TypeErrCtxt; use rustc_errors::Applicability::{MachineApplicable, MaybeIncorrect}; use rustc_errors::{pluralize, Diagnostic, MultiSpan}; -use rustc_hir::{self as hir, def::DefKind}; +use rustc_hir as hir; use rustc_middle::traits::ObligationCauseCode; use rustc_middle::ty::error::ExpectedFound; use rustc_middle::ty::print::Printer; @@ -75,7 +75,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { diag.note("an associated type was expected, but a different one was found"); } (ty::Param(p), ty::Alias(ty::Projection, proj)) | (ty::Alias(ty::Projection, proj), ty::Param(p)) - if tcx.def_kind(proj.def_id) != DefKind::ImplTraitPlaceholder => + if !tcx.is_impl_trait_in_trait(proj.def_id) => { let p_def_id = tcx .generics_of(body_owner_def_id) @@ -222,7 +222,7 @@ impl Trait for X { diag.span_label(p_span, "this type parameter"); } } - (ty::Alias(ty::Projection, proj_ty), _) if tcx.def_kind(proj_ty.def_id) != DefKind::ImplTraitPlaceholder => { + (ty::Alias(ty::Projection, proj_ty), _) if !tcx.is_impl_trait_in_trait(proj_ty.def_id) => { self.expected_projection( diag, proj_ty, @@ -231,7 +231,7 @@ impl Trait for X { cause.code(), ); } - (_, ty::Alias(ty::Projection, proj_ty)) if tcx.def_kind(proj_ty.def_id) != DefKind::ImplTraitPlaceholder => { + (_, ty::Alias(ty::Projection, proj_ty)) if !tcx.is_impl_trait_in_trait(proj_ty.def_id) => { let msg = format!( "consider constraining the associated type `{}` to `{}`", values.found, values.expected, diff --git a/compiler/rustc_infer/src/infer/opaque_types.rs b/compiler/rustc_infer/src/infer/opaque_types.rs index d5c824d4c41c..cf7b364c6785 100644 --- a/compiler/rustc_infer/src/infer/opaque_types.rs +++ b/compiler/rustc_infer/src/infer/opaque_types.rs @@ -1,7 +1,6 @@ use crate::errors::OpaqueHiddenTypeDiag; use crate::infer::{DefiningAnchor, InferCtxt, InferOk}; use crate::traits; -use hir::def::DefKind; use hir::def_id::{DefId, LocalDefId}; use hir::OpaqueTyOrigin; use rustc_data_structures::sync::Lrc; @@ -481,9 +480,7 @@ where } } - ty::Alias(ty::Projection, proj) - if self.tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder => - { + ty::Alias(ty::Projection, proj) if self.tcx.is_impl_trait_in_trait(proj.def_id) => { // Skip lifetime parameters that are not captures. let variances = self.tcx.variances_of(proj.def_id); @@ -563,8 +560,7 @@ impl<'tcx> InferCtxt<'tcx> { // FIXME(RPITIT): Don't replace RPITITs with inference vars. ty::Alias(ty::Projection, projection_ty) if !projection_ty.has_escaping_bound_vars() - && tcx.def_kind(projection_ty.def_id) - != DefKind::ImplTraitPlaceholder => + && !tcx.is_impl_trait_in_trait(projection_ty.def_id) => { self.infer_projection( param_env, diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index c6db65e74378..6ef8384d0107 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -2578,6 +2578,10 @@ impl<'tcx> TyCtxt<'tcx> { let Some(trait_item_def_id) = item.trait_item_def_id else { return false; }; + if self.lower_impl_trait_in_trait_to_assoc_ty() { + return !self.associated_items_for_impl_trait_in_trait(trait_item_def_id).is_empty(); + } + // FIXME(RPITIT): This does a somewhat manual walk through the signature // of the trait fn to look for any RPITITs, but that's kinda doing a lot // of work. We can probably remove this when we refactor RPITITs to be diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index b3139d23d36e..fffdbfc9660b 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -728,7 +728,7 @@ pub trait PrettyPrinter<'tcx>: } ty::Alias(ty::Projection, ref data) => { if !(self.should_print_verbose() || NO_QUERIES.with(|q| q.get())) - && self.tcx().def_kind(data.def_id) == DefKind::ImplTraitPlaceholder + && self.tcx().is_impl_trait_in_trait(data.def_id) { return self.pretty_print_opaque_impl_type(data.def_id, data.substs); } else { diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs index 7512663a9fb8..ad05b68f1b47 100644 --- a/compiler/rustc_ty_utils/src/ty.rs +++ b/compiler/rustc_ty_utils/src/ty.rs @@ -268,7 +268,9 @@ impl<'tcx> TypeVisitor> for ImplTraitInTraitFinder<'_, 'tcx> { fn visit_ty(&mut self, ty: Ty<'tcx>) -> std::ops::ControlFlow { if let ty::Alias(ty::Projection, alias_ty) = *ty.kind() - && self.tcx.def_kind(alias_ty.def_id) == DefKind::ImplTraitPlaceholder + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty) need to project to the opaque, could + // get it via type_of + subst. + && self.tcx.is_impl_trait_in_trait(alias_ty.def_id) && self.tcx.impl_trait_in_trait_parent_fn(alias_ty.def_id) == self.fn_def_id && self.seen.insert(alias_ty.def_id) { diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs index 29c3afe0d956..989e091a0d2d 100644 --- a/src/librustdoc/clean/mod.rs +++ b/src/librustdoc/clean/mod.rs @@ -426,7 +426,7 @@ fn clean_projection<'tcx>( cx: &mut DocContext<'tcx>, def_id: Option, ) -> Type { - if cx.tcx.def_kind(ty.skip_binder().def_id) == DefKind::ImplTraitPlaceholder { + if cx.tcx.is_impl_trait_in_trait(ty.skip_binder().def_id) { let bounds = cx .tcx .explicit_item_bounds(ty.skip_binder().def_id) From 11f181083136f1a91feb4061c640d8c753e3c5f0 Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Mon, 13 Mar 2023 19:02:28 -0300 Subject: [PATCH 16/57] Feed is_type_alias_impl_trait for RPITITs on the trait side --- compiler/rustc_middle/src/query/mod.rs | 1 + compiler/rustc_ty_utils/src/assoc.rs | 2 ++ 2 files changed, 3 insertions(+) diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs index 75f05c4af23d..690a0b8b04d7 100644 --- a/compiler/rustc_middle/src/query/mod.rs +++ b/compiler/rustc_middle/src/query/mod.rs @@ -191,6 +191,7 @@ rustc_queries! { { desc { "determine whether the opaque is a type-alias impl trait" } separate_provide_extern + feedable } query unsizing_params_for_adt(key: DefId) -> &'tcx rustc_index::bit_set::BitSet diff --git a/compiler/rustc_ty_utils/src/assoc.rs b/compiler/rustc_ty_utils/src/assoc.rs index fae5997e3949..68b1086e8e3f 100644 --- a/compiler/rustc_ty_utils/src/assoc.rs +++ b/compiler/rustc_ty_utils/src/assoc.rs @@ -289,6 +289,8 @@ fn associated_item_for_impl_trait_in_trait( InternalSubsts::identity_for_item(tcx, opaque_ty_def_id.to_def_id()), ))); + trait_assoc_ty.is_type_alias_impl_trait(false); + // Copy generics_of of the opaque type item but the trait is the parent. trait_assoc_ty.generics_of({ let opaque_ty_generics = tcx.generics_of(opaque_ty_def_id); From c5c43407603599f4ff2b217cc09be2cc5f39967d Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Tue, 14 Mar 2023 19:23:16 -0300 Subject: [PATCH 17/57] Add revisions to fixed tests in -Zlower-impl-trait-in-trait-to-assoc-ty --- ... async-generics-and-bounds.current.stderr} | 12 +++--- .../async-generics-and-bounds.next.stderr | 37 +++++++++++++++++++ .../in-trait/async-generics-and-bounds.rs | 2 + ...s.stderr => async-generics.current.stderr} | 12 +++--- .../in-trait/async-generics.next.stderr | 37 +++++++++++++++++++ .../ui/async-await/in-trait/async-generics.rs | 2 + ...571.stderr => issue-102571.current.stderr} | 2 +- .../in-trait/issue-102571.next.stderr | 14 +++++++ tests/ui/impl-trait/in-trait/issue-102571.rs | 3 ++ ...r => specialization-broken.current.stderr} | 6 +-- .../specialization-broken.next.stderr | 31 ++++++++++++++++ .../in-trait/specialization-broken.rs | 3 ++ ...bounds.stderr => wf-bounds.current.stderr} | 6 +-- .../impl-trait/in-trait/wf-bounds.next.stderr | 30 +++++++++++++++ tests/ui/impl-trait/in-trait/wf-bounds.rs | 2 + 15 files changed, 180 insertions(+), 19 deletions(-) rename tests/ui/async-await/in-trait/{async-generics-and-bounds.stderr => async-generics-and-bounds.current.stderr} (82%) create mode 100644 tests/ui/async-await/in-trait/async-generics-and-bounds.next.stderr rename tests/ui/async-await/in-trait/{async-generics.stderr => async-generics.current.stderr} (83%) create mode 100644 tests/ui/async-await/in-trait/async-generics.next.stderr rename tests/ui/impl-trait/in-trait/{issue-102571.stderr => issue-102571.current.stderr} (93%) create mode 100644 tests/ui/impl-trait/in-trait/issue-102571.next.stderr rename tests/ui/impl-trait/in-trait/{specialization-broken.stderr => specialization-broken.current.stderr} (88%) create mode 100644 tests/ui/impl-trait/in-trait/specialization-broken.next.stderr rename tests/ui/impl-trait/in-trait/{wf-bounds.stderr => wf-bounds.current.stderr} (91%) create mode 100644 tests/ui/impl-trait/in-trait/wf-bounds.next.stderr diff --git a/tests/ui/async-await/in-trait/async-generics-and-bounds.stderr b/tests/ui/async-await/in-trait/async-generics-and-bounds.current.stderr similarity index 82% rename from tests/ui/async-await/in-trait/async-generics-and-bounds.stderr rename to tests/ui/async-await/in-trait/async-generics-and-bounds.current.stderr index f1f0d7e5907d..780da0689629 100644 --- a/tests/ui/async-await/in-trait/async-generics-and-bounds.stderr +++ b/tests/ui/async-await/in-trait/async-generics-and-bounds.current.stderr @@ -1,33 +1,33 @@ error[E0311]: the parameter type `U` may not live long enough - --> $DIR/async-generics-and-bounds.rs:12:28 + --> $DIR/async-generics-and-bounds.rs:14:28 | LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; | ^^^^^^^ | note: the parameter type `U` must be valid for the anonymous lifetime defined here... - --> $DIR/async-generics-and-bounds.rs:12:18 + --> $DIR/async-generics-and-bounds.rs:14:18 | LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; | ^^^^^ note: ...so that the reference type `&(T, U)` does not outlive the data it points at - --> $DIR/async-generics-and-bounds.rs:12:28 + --> $DIR/async-generics-and-bounds.rs:14:28 | LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; | ^^^^^^^ error[E0311]: the parameter type `T` may not live long enough - --> $DIR/async-generics-and-bounds.rs:12:28 + --> $DIR/async-generics-and-bounds.rs:14:28 | LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; | ^^^^^^^ | note: the parameter type `T` must be valid for the anonymous lifetime defined here... - --> $DIR/async-generics-and-bounds.rs:12:18 + --> $DIR/async-generics-and-bounds.rs:14:18 | LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; | ^^^^^ note: ...so that the reference type `&(T, U)` does not outlive the data it points at - --> $DIR/async-generics-and-bounds.rs:12:28 + --> $DIR/async-generics-and-bounds.rs:14:28 | LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; | ^^^^^^^ diff --git a/tests/ui/async-await/in-trait/async-generics-and-bounds.next.stderr b/tests/ui/async-await/in-trait/async-generics-and-bounds.next.stderr new file mode 100644 index 000000000000..780da0689629 --- /dev/null +++ b/tests/ui/async-await/in-trait/async-generics-and-bounds.next.stderr @@ -0,0 +1,37 @@ +error[E0311]: the parameter type `U` may not live long enough + --> $DIR/async-generics-and-bounds.rs:14:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + | +note: the parameter type `U` must be valid for the anonymous lifetime defined here... + --> $DIR/async-generics-and-bounds.rs:14:18 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics-and-bounds.rs:14:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + +error[E0311]: the parameter type `T` may not live long enough + --> $DIR/async-generics-and-bounds.rs:14:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + | +note: the parameter type `T` must be valid for the anonymous lifetime defined here... + --> $DIR/async-generics-and-bounds.rs:14:18 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics-and-bounds.rs:14:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0311`. diff --git a/tests/ui/async-await/in-trait/async-generics-and-bounds.rs b/tests/ui/async-await/in-trait/async-generics-and-bounds.rs index a73d55adfece..146e74ec2d03 100644 --- a/tests/ui/async-await/in-trait/async-generics-and-bounds.rs +++ b/tests/ui/async-await/in-trait/async-generics-and-bounds.rs @@ -1,6 +1,8 @@ // check-fail // known-bug: #102682 // edition: 2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/async-await/in-trait/async-generics.stderr b/tests/ui/async-await/in-trait/async-generics.current.stderr similarity index 83% rename from tests/ui/async-await/in-trait/async-generics.stderr rename to tests/ui/async-await/in-trait/async-generics.current.stderr index 2f05564564cd..04e1ab6d7697 100644 --- a/tests/ui/async-await/in-trait/async-generics.stderr +++ b/tests/ui/async-await/in-trait/async-generics.current.stderr @@ -1,33 +1,33 @@ error[E0311]: the parameter type `U` may not live long enough - --> $DIR/async-generics.rs:9:28 + --> $DIR/async-generics.rs:11:28 | LL | async fn foo(&self) -> &(T, U); | ^^^^^^^ | note: the parameter type `U` must be valid for the anonymous lifetime defined here... - --> $DIR/async-generics.rs:9:18 + --> $DIR/async-generics.rs:11:18 | LL | async fn foo(&self) -> &(T, U); | ^^^^^ note: ...so that the reference type `&(T, U)` does not outlive the data it points at - --> $DIR/async-generics.rs:9:28 + --> $DIR/async-generics.rs:11:28 | LL | async fn foo(&self) -> &(T, U); | ^^^^^^^ error[E0311]: the parameter type `T` may not live long enough - --> $DIR/async-generics.rs:9:28 + --> $DIR/async-generics.rs:11:28 | LL | async fn foo(&self) -> &(T, U); | ^^^^^^^ | note: the parameter type `T` must be valid for the anonymous lifetime defined here... - --> $DIR/async-generics.rs:9:18 + --> $DIR/async-generics.rs:11:18 | LL | async fn foo(&self) -> &(T, U); | ^^^^^ note: ...so that the reference type `&(T, U)` does not outlive the data it points at - --> $DIR/async-generics.rs:9:28 + --> $DIR/async-generics.rs:11:28 | LL | async fn foo(&self) -> &(T, U); | ^^^^^^^ diff --git a/tests/ui/async-await/in-trait/async-generics.next.stderr b/tests/ui/async-await/in-trait/async-generics.next.stderr new file mode 100644 index 000000000000..04e1ab6d7697 --- /dev/null +++ b/tests/ui/async-await/in-trait/async-generics.next.stderr @@ -0,0 +1,37 @@ +error[E0311]: the parameter type `U` may not live long enough + --> $DIR/async-generics.rs:11:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + | +note: the parameter type `U` must be valid for the anonymous lifetime defined here... + --> $DIR/async-generics.rs:11:18 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics.rs:11:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + +error[E0311]: the parameter type `T` may not live long enough + --> $DIR/async-generics.rs:11:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + | +note: the parameter type `T` must be valid for the anonymous lifetime defined here... + --> $DIR/async-generics.rs:11:18 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics.rs:11:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0311`. diff --git a/tests/ui/async-await/in-trait/async-generics.rs b/tests/ui/async-await/in-trait/async-generics.rs index 67000e5770ee..507500abf4e1 100644 --- a/tests/ui/async-await/in-trait/async-generics.rs +++ b/tests/ui/async-await/in-trait/async-generics.rs @@ -1,6 +1,8 @@ // check-fail // known-bug: #102682 // edition: 2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/issue-102571.stderr b/tests/ui/impl-trait/in-trait/issue-102571.current.stderr similarity index 93% rename from tests/ui/impl-trait/in-trait/issue-102571.stderr rename to tests/ui/impl-trait/in-trait/issue-102571.current.stderr index 87219941d916..cac9a29f6440 100644 --- a/tests/ui/impl-trait/in-trait/issue-102571.stderr +++ b/tests/ui/impl-trait/in-trait/issue-102571.current.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/issue-102571.rs:20:9 + --> $DIR/issue-102571.rs:23:9 | LL | let () = t.bar(); | ^^ ------- this expression has type `impl Deref` diff --git a/tests/ui/impl-trait/in-trait/issue-102571.next.stderr b/tests/ui/impl-trait/in-trait/issue-102571.next.stderr new file mode 100644 index 000000000000..cac9a29f6440 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/issue-102571.next.stderr @@ -0,0 +1,14 @@ +error[E0308]: mismatched types + --> $DIR/issue-102571.rs:23:9 + | +LL | let () = t.bar(); + | ^^ ------- this expression has type `impl Deref` + | | + | expected associated type, found `()` + | + = note: expected associated type `impl Deref` + found unit type `()` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/issue-102571.rs b/tests/ui/impl-trait/in-trait/issue-102571.rs index 61c91e64417b..f0ddab5e7f22 100644 --- a/tests/ui/impl-trait/in-trait/issue-102571.rs +++ b/tests/ui/impl-trait/in-trait/issue-102571.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.stderr b/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr similarity index 88% rename from tests/ui/impl-trait/in-trait/specialization-broken.stderr rename to tests/ui/impl-trait/in-trait/specialization-broken.current.stderr index dc621d6b8a84..f48e7a1ed140 100644 --- a/tests/ui/impl-trait/in-trait/specialization-broken.stderr +++ b/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr @@ -1,5 +1,5 @@ error[E0053]: method `bar` has an incompatible type for trait - --> $DIR/specialization-broken.rs:16:22 + --> $DIR/specialization-broken.rs:19:22 | LL | default impl Foo for U | - this type parameter @@ -11,7 +11,7 @@ LL | fn bar(&self) -> U { | help: change the output type to match the trait: `impl Sized` | note: type in trait - --> $DIR/specialization-broken.rs:9:22 + --> $DIR/specialization-broken.rs:12:22 | LL | fn bar(&self) -> impl Sized; | ^^^^^^^^^^ @@ -19,7 +19,7 @@ LL | fn bar(&self) -> impl Sized; found signature `fn(&U) -> U` error: method with return-position `impl Trait` in trait cannot be specialized - --> $DIR/specialization-broken.rs:16:5 + --> $DIR/specialization-broken.rs:19:5 | LL | fn bar(&self) -> U { | ^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr b/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr new file mode 100644 index 000000000000..f48e7a1ed140 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr @@ -0,0 +1,31 @@ +error[E0053]: method `bar` has an incompatible type for trait + --> $DIR/specialization-broken.rs:19:22 + | +LL | default impl Foo for U + | - this type parameter +... +LL | fn bar(&self) -> U { + | ^ + | | + | expected associated type, found type parameter `U` + | help: change the output type to match the trait: `impl Sized` + | +note: type in trait + --> $DIR/specialization-broken.rs:12:22 + | +LL | fn bar(&self) -> impl Sized; + | ^^^^^^^^^^ + = note: expected signature `fn(&U) -> impl Sized` + found signature `fn(&U) -> U` + +error: method with return-position `impl Trait` in trait cannot be specialized + --> $DIR/specialization-broken.rs:19:5 + | +LL | fn bar(&self) -> U { + | ^^^^^^^^^^^^^^^^^^ + | + = note: specialization behaves in inconsistent and surprising ways with `#![feature(return_position_impl_trait_in_trait)]`, and for now is disallowed + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.rs b/tests/ui/impl-trait/in-trait/specialization-broken.rs index 2fcffdf3f9a2..658d0709717a 100644 --- a/tests/ui/impl-trait/in-trait/specialization-broken.rs +++ b/tests/ui/impl-trait/in-trait/specialization-broken.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + // FIXME(compiler-errors): I'm not exactly sure if this is expected to pass or not. // But we fixed an ICE anyways. diff --git a/tests/ui/impl-trait/in-trait/wf-bounds.stderr b/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr similarity index 91% rename from tests/ui/impl-trait/in-trait/wf-bounds.stderr rename to tests/ui/impl-trait/in-trait/wf-bounds.current.stderr index 03cc4c2b93be..8392f26e7c8c 100644 --- a/tests/ui/impl-trait/in-trait/wf-bounds.stderr +++ b/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr @@ -1,5 +1,5 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:9:22 + --> $DIR/wf-bounds.rs:11:22 | LL | fn nya() -> impl Wf>; | ^^^^^^^^^^^^^ doesn't have a size known at compile-time @@ -9,14 +9,14 @@ note: required by a bound in `Vec` --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:12:23 + --> $DIR/wf-bounds.rs:14:23 | LL | fn nya2() -> impl Wf<[u8]>; | ^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` note: required by a bound in `Wf` - --> $DIR/wf-bounds.rs:6:10 + --> $DIR/wf-bounds.rs:8:10 | LL | trait Wf {} | ^ required by this bound in `Wf` diff --git a/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr b/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr new file mode 100644 index 000000000000..8392f26e7c8c --- /dev/null +++ b/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr @@ -0,0 +1,30 @@ +error[E0277]: the size for values of type `[u8]` cannot be known at compilation time + --> $DIR/wf-bounds.rs:11:22 + | +LL | fn nya() -> impl Wf>; + | ^^^^^^^^^^^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `[u8]` +note: required by a bound in `Vec` + --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL + +error[E0277]: the size for values of type `[u8]` cannot be known at compilation time + --> $DIR/wf-bounds.rs:14:23 + | +LL | fn nya2() -> impl Wf<[u8]>; + | ^^^^^^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `[u8]` +note: required by a bound in `Wf` + --> $DIR/wf-bounds.rs:8:10 + | +LL | trait Wf {} + | ^ required by this bound in `Wf` +help: consider relaxing the implicit `Sized` restriction + | +LL | trait Wf {} + | ++++++++ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/wf-bounds.rs b/tests/ui/impl-trait/in-trait/wf-bounds.rs index 2c71583b3123..39f412753159 100644 --- a/tests/ui/impl-trait/in-trait/wf-bounds.rs +++ b/tests/ui/impl-trait/in-trait/wf-bounds.rs @@ -1,4 +1,6 @@ // issue #101663 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] From 0949da8f4e309ac5e5035250bd662dfdbd5c32b4 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Wed, 15 Mar 2023 22:55:00 +0000 Subject: [PATCH 18/57] Install projection from RPITIT to default trait method opaque correctly --- .../src/collect/item_bounds.rs | 36 +++++++++++-------- compiler/rustc_ty_utils/src/ty.rs | 17 +++++++-- ...sync-default-fn-overridden.current.stderr} | 2 +- .../async-default-fn-overridden.next.stderr | 11 ++++++ .../in-trait/async-default-fn-overridden.rs | 2 ++ ... default-method-constraint.current.stderr} | 2 +- .../default-method-constraint.next.stderr | 11 ++++++ .../in-trait/default-method-constraint.rs | 2 ++ 8 files changed, 64 insertions(+), 19 deletions(-) rename tests/ui/async-await/in-trait/{async-default-fn-overridden.stderr => async-default-fn-overridden.current.stderr} (88%) create mode 100644 tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr rename tests/ui/impl-trait/in-trait/{default-method-constraint.stderr => default-method-constraint.current.stderr} (90%) create mode 100644 tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr diff --git a/compiler/rustc_hir_analysis/src/collect/item_bounds.rs b/compiler/rustc_hir_analysis/src/collect/item_bounds.rs index 7dce29cc0bbe..df0258ff7a36 100644 --- a/compiler/rustc_hir_analysis/src/collect/item_bounds.rs +++ b/compiler/rustc_hir_analysis/src/collect/item_bounds.rs @@ -3,7 +3,7 @@ use crate::astconv::AstConv; use rustc_hir as hir; use rustc_infer::traits::util; use rustc_middle::ty::subst::InternalSubsts; -use rustc_middle::ty::{self, ImplTraitInTraitData, Ty, TyCtxt}; +use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_span::def_id::DefId; use rustc_span::Span; @@ -76,18 +76,26 @@ pub(super) fn explicit_item_bounds( tcx: TyCtxt<'_>, def_id: DefId, ) -> &'_ [(ty::Predicate<'_>, Span)] { - // If the def_id is about an RPITIT, delegate explicit_item_bounds to the opaque_def_id that - // generated the synthesized associate type. - let rpitit_info = if let Some(ImplTraitInTraitData::Trait { opaque_def_id, .. }) = - tcx.opt_rpitit_info(def_id) - { - Some(opaque_def_id) - } else { - None - }; + match tcx.opt_rpitit_info(def_id) { + // RPITIT's bounds are the same as opaque type bounds, but with + // a projection self type. + Some(ty::ImplTraitInTraitData::Trait { opaque_def_id, .. }) => { + let item = tcx.hir().get_by_def_id(opaque_def_id.expect_local()).expect_item(); + let opaque_ty = item.expect_opaque_ty(); + return opaque_type_bounds( + tcx, + opaque_def_id, + opaque_ty.bounds, + tcx.mk_projection(def_id, ty::InternalSubsts::identity_for_item(tcx, def_id)), + item.span, + ); + } + // These should have been fed! + Some(ty::ImplTraitInTraitData::Impl { .. }) => unreachable!(), + None => {} + } - let bounds_def_id = rpitit_info.unwrap_or(def_id); - let hir_id = tcx.hir().local_def_id_to_hir_id(bounds_def_id.expect_local()); + let hir_id = tcx.hir().local_def_id_to_hir_id(def_id.expect_local()); match tcx.hir().get(hir_id) { hir::Node::TraitItem(hir::TraitItem { kind: hir::TraitItemKind::Type(bounds, _), @@ -100,12 +108,12 @@ pub(super) fn explicit_item_bounds( .. }) => { let substs = InternalSubsts::identity_for_item(tcx, def_id); - let item_ty = if *in_trait || rpitit_info.is_some() { + let item_ty = if *in_trait && !tcx.lower_impl_trait_in_trait_to_assoc_ty() { tcx.mk_projection(def_id, substs) } else { tcx.mk_opaque(def_id, substs) }; - opaque_type_bounds(tcx, bounds_def_id, bounds, item_ty, *span) + opaque_type_bounds(tcx, def_id, bounds, item_ty, *span) } _ => bug!("item_bounds called on {:?}", def_id), } diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs index ad05b68f1b47..df4b8543ba60 100644 --- a/compiler/rustc_ty_utils/src/ty.rs +++ b/compiler/rustc_ty_utils/src/ty.rs @@ -268,8 +268,6 @@ impl<'tcx> TypeVisitor> for ImplTraitInTraitFinder<'_, 'tcx> { fn visit_ty(&mut self, ty: Ty<'tcx>) -> std::ops::ControlFlow { if let ty::Alias(ty::Projection, alias_ty) = *ty.kind() - // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty) need to project to the opaque, could - // get it via type_of + subst. && self.tcx.is_impl_trait_in_trait(alias_ty.def_id) && self.tcx.impl_trait_in_trait_parent_fn(alias_ty.def_id) == self.fn_def_id && self.seen.insert(alias_ty.def_id) @@ -284,11 +282,24 @@ impl<'tcx> TypeVisitor> for ImplTraitInTraitFinder<'_, 'tcx> { re } }); + + // If we're lowering to associated item, install the opaque type which is just + // the `type_of` of the trait's associated item. If we're using the old lowering + // strategy, then just reinterpret the associated type like an opaque :^) + let default_ty = if self.tcx.lower_impl_trait_in_trait_to_assoc_ty() { + self + .tcx + .type_of(alias_ty.def_id) + .subst(self.tcx, alias_ty.substs) + } else { + self.tcx.mk_alias(ty::Opaque, alias_ty) + }; + self.predicates.push( ty::Binder::bind_with_vars( ty::ProjectionPredicate { projection_ty: alias_ty, - term: self.tcx.mk_alias(ty::Opaque, alias_ty).into(), + term: default_ty.into(), }, self.bound_vars, ) diff --git a/tests/ui/async-await/in-trait/async-default-fn-overridden.stderr b/tests/ui/async-await/in-trait/async-default-fn-overridden.current.stderr similarity index 88% rename from tests/ui/async-await/in-trait/async-default-fn-overridden.stderr rename to tests/ui/async-await/in-trait/async-default-fn-overridden.current.stderr index 61a826258d09..2142ee232ca5 100644 --- a/tests/ui/async-await/in-trait/async-default-fn-overridden.stderr +++ b/tests/ui/async-await/in-trait/async-default-fn-overridden.current.stderr @@ -1,5 +1,5 @@ warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/async-default-fn-overridden.rs:4:12 + --> $DIR/async-default-fn-overridden.rs:6:12 | LL | #![feature(async_fn_in_trait)] | ^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr b/tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr new file mode 100644 index 000000000000..2142ee232ca5 --- /dev/null +++ b/tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr @@ -0,0 +1,11 @@ +warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/async-default-fn-overridden.rs:6:12 + | +LL | #![feature(async_fn_in_trait)] + | ^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/async-await/in-trait/async-default-fn-overridden.rs b/tests/ui/async-await/in-trait/async-default-fn-overridden.rs index 0fd1a2703db9..dd1af93d706c 100644 --- a/tests/ui/async-await/in-trait/async-default-fn-overridden.rs +++ b/tests/ui/async-await/in-trait/async-default-fn-overridden.rs @@ -1,5 +1,7 @@ // run-pass // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait)] //~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.stderr b/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr similarity index 90% rename from tests/ui/impl-trait/in-trait/default-method-constraint.stderr rename to tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr index 5e18605aa4cb..7bb79911f56f 100644 --- a/tests/ui/impl-trait/in-trait/default-method-constraint.stderr +++ b/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr @@ -1,5 +1,5 @@ warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/default-method-constraint.rs:5:12 + --> $DIR/default-method-constraint.rs:7:12 | LL | #![feature(return_position_impl_trait_in_trait)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr b/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr new file mode 100644 index 000000000000..7bb79911f56f --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr @@ -0,0 +1,11 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/default-method-constraint.rs:7:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.rs b/tests/ui/impl-trait/in-trait/default-method-constraint.rs index 8c50cc295864..e85fe3c8626f 100644 --- a/tests/ui/impl-trait/in-trait/default-method-constraint.rs +++ b/tests/ui/impl-trait/in-trait/default-method-constraint.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next // This didn't work in the previous default RPITIT method hack attempt From ff7c3b854df3f61380261fa2d32cd4c0843ebc83 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Thu, 16 Mar 2023 01:11:04 +0000 Subject: [PATCH 19/57] Don't install default opaque projection predicates in RPITIT associated type's param-env --- .../rustc_hir_analysis/src/check/wfcheck.rs | 28 +++++++++++-------- compiler/rustc_ty_utils/src/ty.rs | 22 ++++++++++----- ...box-coerce-span-in-default.current.stderr} | 2 +- .../box-coerce-span-in-default.next.stderr | 11 ++++++++ .../in-trait/box-coerce-span-in-default.rs | 2 ++ ...=> default-body-type-err-2.current.stderr} | 2 +- .../default-body-type-err-2.next.stderr | 11 ++++++++ .../in-trait/default-body-type-err-2.rs | 2 ++ ...r => default-body-type-err.current.stderr} | 2 +- .../default-body-type-err.next.stderr | 12 ++++++++ .../in-trait/default-body-type-err.rs | 3 ++ tests/ui/impl-trait/in-trait/default-body.rs | 2 ++ 12 files changed, 78 insertions(+), 21 deletions(-) rename tests/ui/impl-trait/in-trait/{box-coerce-span-in-default.stderr => box-coerce-span-in-default.current.stderr} (90%) create mode 100644 tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr rename tests/ui/impl-trait/in-trait/{default-body-type-err-2.stderr => default-body-type-err-2.current.stderr} (87%) create mode 100644 tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr rename tests/ui/impl-trait/in-trait/{default-body-type-err.stderr => default-body-type-err.current.stderr} (90%) create mode 100644 tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs index 1687aff56d68..c063b7662276 100644 --- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs +++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs @@ -1545,21 +1545,27 @@ fn check_return_position_impl_trait_in_trait_bounds<'tcx>( if let Some(assoc_item) = tcx.opt_associated_item(fn_def_id.to_def_id()) && assoc_item.container == ty::AssocItemContainer::TraitContainer { + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty): Even with the new lowering + // strategy, we can't just call `check_associated_item` on the new RPITITs, + // because tests like `tests/ui/async-await/in-trait/implied-bounds.rs` will fail. + // That's because we need to check that the bounds of the RPITIT hold using + // the special substs that we create during opaque type lowering, otherwise we're + // getting a bunch of early bound and free regions mixed up... Haven't looked too + // deep into this, though. for arg in fn_output.walk() { if let ty::GenericArgKind::Type(ty) = arg.unpack() - && let ty::Alias(ty::Opaque, proj) = ty.kind() - // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty) we should just check - // `tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder`. Right now - // `check_associated_type_bounds` is not called for RPITITs synthesized as - // associated types. See `check_mod_type_wf` to see how synthesized associated - // types are missed due to iterating over HIR. - && tcx.is_impl_trait_in_trait(proj.def_id) - && tcx.impl_trait_in_trait_parent_fn(proj.def_id) == fn_def_id.to_def_id() + // RPITITs are always eagerly normalized into opaques, so always look for an + // opaque here. + && let ty::Alias(ty::Opaque, opaque_ty) = ty.kind() + && let Some(opaque_def_id) = opaque_ty.def_id.as_local() + && let opaque = tcx.hir().expect_item(opaque_def_id).expect_opaque_ty() + && let hir::OpaqueTyOrigin::FnReturn(source) | hir::OpaqueTyOrigin::AsyncFn(source) = opaque.origin + && source == fn_def_id { - let span = tcx.def_span(proj.def_id); - let bounds = wfcx.tcx().explicit_item_bounds(proj.def_id); + let span = tcx.def_span(opaque_ty.def_id); + let bounds = wfcx.tcx().explicit_item_bounds(opaque_ty.def_id); let wf_obligations = bounds.iter().flat_map(|&(bound, bound_span)| { - let bound = ty::EarlyBinder(bound).subst(tcx, proj.substs); + let bound = ty::EarlyBinder(bound).subst(tcx, opaque_ty.substs); let normalized_bound = wfcx.normalize(span, None, bound); traits::wf::predicate_obligations( wfcx.infcx, diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs index df4b8543ba60..9fed1e57c921 100644 --- a/compiler/rustc_ty_utils/src/ty.rs +++ b/compiler/rustc_ty_utils/src/ty.rs @@ -117,16 +117,22 @@ fn adt_sized_constraint(tcx: TyCtxt<'_>, def_id: DefId) -> &[Ty<'_>] { /// See `ParamEnv` struct definition for details. fn param_env(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ParamEnv<'_> { - // When computing the param_env of an RPITIT, copy param_env of the containing function. The - // synthesized associated type doesn't have extra predicates to assume. - if let Some(ImplTraitInTraitData::Trait { fn_def_id, .. }) = tcx.opt_rpitit_info(def_id) { - return tcx.param_env(fn_def_id); - } - // Compute the bounds on Self and the type parameters. let ty::InstantiatedPredicates { mut predicates, .. } = tcx.predicates_of(def_id).instantiate_identity(tcx); + // When computing the param_env of an RPITIT, use predicates of the containing function, + // *except* for the additional assumption that the RPITIT normalizes to the trait method's + // default opaque type. This is needed to properly check the item bounds of the assoc + // type hold (`check_type_bounds`), since that method already installs a similar projection + // bound, so they will conflict. + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty): I don't like this, we should + // at least be making sure that the generics in RPITITs and their parent fn don't + // get out of alignment, or else we do actually need to substitute these predicates. + if let Some(ImplTraitInTraitData::Trait { fn_def_id, .. }) = tcx.opt_rpitit_info(def_id) { + predicates = tcx.predicates_of(fn_def_id).instantiate_identity(tcx).predicates; + } + // Finally, we have to normalize the bounds in the environment, in // case they contain any associated type projections. This process // can yield errors if the put in illegal associated types, like @@ -160,7 +166,9 @@ fn param_env(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ParamEnv<'_> { } let local_did = def_id.as_local(); - let hir_id = local_did.map(|def_id| tcx.hir().local_def_id_to_hir_id(def_id)); + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty): This isn't correct for + // RPITITs in const trait fn. + let hir_id = local_did.and_then(|def_id| tcx.opt_local_def_id_to_hir_id(def_id)); // FIXME(consts): This is not exactly in line with the constness query. let constness = match hir_id { diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.stderr b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr similarity index 90% rename from tests/ui/impl-trait/in-trait/box-coerce-span-in-default.stderr rename to tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr index d681ecf25e8a..05c025cc169f 100644 --- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.stderr +++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr @@ -1,5 +1,5 @@ warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/box-coerce-span-in-default.rs:3:12 + --> $DIR/box-coerce-span-in-default.rs:5:12 | LL | #![feature(return_position_impl_trait_in_trait)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr new file mode 100644 index 000000000000..05c025cc169f --- /dev/null +++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr @@ -0,0 +1,11 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/box-coerce-span-in-default.rs:5:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs index a4d483dee7a5..163bb4fcf773 100644 --- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs +++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] //~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err-2.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr similarity index 87% rename from tests/ui/impl-trait/in-trait/default-body-type-err-2.stderr rename to tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr index cc3bdf0e5717..85450e3b0a0b 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err-2.stderr +++ b/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/default-body-type-err-2.rs:8:9 + --> $DIR/default-body-type-err-2.rs:10:9 | LL | 42 | ^^- help: try using a conversion method: `.to_string()` diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr new file mode 100644 index 000000000000..85450e3b0a0b --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr @@ -0,0 +1,11 @@ +error[E0308]: mismatched types + --> $DIR/default-body-type-err-2.rs:10:9 + | +LL | 42 + | ^^- help: try using a conversion method: `.to_string()` + | | + | expected `String`, found integer + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs b/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs index 45ae2b8ad3a6..623237763100 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs +++ b/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs @@ -1,4 +1,6 @@ // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![allow(incomplete_features)] #![feature(async_fn_in_trait)] diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr similarity index 90% rename from tests/ui/impl-trait/in-trait/default-body-type-err.stderr rename to tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr index 4742eb37d3e4..c949168a3778 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err.stderr +++ b/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr @@ -1,5 +1,5 @@ error[E0271]: type mismatch resolving `<&i32 as Deref>::Target == String` - --> $DIR/default-body-type-err.rs:7:22 + --> $DIR/default-body-type-err.rs:10:22 | LL | fn lol(&self) -> impl Deref { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `String` diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr new file mode 100644 index 000000000000..c949168a3778 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr @@ -0,0 +1,12 @@ +error[E0271]: type mismatch resolving `<&i32 as Deref>::Target == String` + --> $DIR/default-body-type-err.rs:10:22 + | +LL | fn lol(&self) -> impl Deref { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `String` +LL | +LL | &1i32 + | ----- return type was inferred to be `&i32` here + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0271`. diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err.rs b/tests/ui/impl-trait/in-trait/default-body-type-err.rs index ac9baf91cae3..9bd5b7779898 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err.rs +++ b/tests/ui/impl-trait/in-trait/default-body-type-err.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![allow(incomplete_features)] #![feature(return_position_impl_trait_in_trait)] diff --git a/tests/ui/impl-trait/in-trait/default-body.rs b/tests/ui/impl-trait/in-trait/default-body.rs index b0baf5bb10dd..ab6a51c6bcb8 100644 --- a/tests/ui/impl-trait/in-trait/default-body.rs +++ b/tests/ui/impl-trait/in-trait/default-body.rs @@ -1,5 +1,7 @@ // check-pass // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait, return_position_impl_trait_in_trait)] #![allow(incomplete_features)] From 8d922eba796a236dbfdd032d5e4c279519e02b60 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Thu, 16 Mar 2023 01:22:56 +0000 Subject: [PATCH 20/57] Fix on_unimplemented_note for RPITITs --- .../traits/error_reporting/on_unimplemented.rs | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs index 277926688e21..a9c4e1268163 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs @@ -144,18 +144,22 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { trait_ref: ty::PolyTraitRef<'tcx>, obligation: &PredicateObligation<'tcx>, ) -> OnUnimplementedNote { - if self.tcx.opt_rpitit_info(obligation.cause.body_id.to_def_id()).is_some() { - return OnUnimplementedNote::default(); - } - let (def_id, substs) = self .impl_similar_to(trait_ref, obligation) .unwrap_or_else(|| (trait_ref.def_id(), trait_ref.skip_binder().substs)); let trait_ref = trait_ref.skip_binder(); - let body_hir = self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id); - let mut flags = - vec![(sym::ItemContext, self.describe_enclosure(body_hir).map(|s| s.to_owned()))]; + let mut flags = vec![]; + // FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty): HIR is not present for RPITITs, + // but I guess we could synthesize one here. We don't see any errors that rely on + // that yet, though. + let enclosure = + if let Some(body_hir) = self.tcx.opt_local_def_id_to_hir_id(obligation.cause.body_id) { + self.describe_enclosure(body_hir).map(|s| s.to_owned()) + } else { + None + }; + flags.push((sym::ItemContext, enclosure)); match obligation.cause.code() { ObligationCauseCode::BuiltinDerivedObligation(..) From 60da5de1c68e8465f4896f8cd5a8b158c00051a1 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Thu, 16 Mar 2023 04:02:56 +0000 Subject: [PATCH 21/57] Fix index out of bounds in suggest_trait_fn_ty_for_impl_fn_infer --- compiler/rustc_hir_analysis/src/astconv/mod.rs | 9 ++++++--- tests/ui/suggestions/bad-infer-in-trait-impl.rs | 10 ++++++++++ .../ui/suggestions/bad-infer-in-trait-impl.stderr | 14 ++++++++++++++ 3 files changed, 30 insertions(+), 3 deletions(-) create mode 100644 tests/ui/suggestions/bad-infer-in-trait-impl.rs create mode 100644 tests/ui/suggestions/bad-infer-in-trait-impl.stderr diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs index f830269b45da..3c2cf0d80ab8 100644 --- a/compiler/rustc_hir_analysis/src/astconv/mod.rs +++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs @@ -3317,10 +3317,13 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { tcx, trait_ref.substs.extend_to(tcx, assoc.def_id, |param, _| tcx.mk_param_from_def(param)), ); + let fn_sig = tcx.liberate_late_bound_regions(fn_hir_id.expect_owner().to_def_id(), fn_sig); - let ty = if let Some(arg_idx) = arg_idx { fn_sig.input(arg_idx) } else { fn_sig.output() }; - - Some(tcx.liberate_late_bound_regions(fn_hir_id.expect_owner().to_def_id(), ty)) + Some(if let Some(arg_idx) = arg_idx { + *fn_sig.inputs().get(arg_idx)? + } else { + fn_sig.output() + }) } #[instrument(level = "trace", skip(self, generate_err))] diff --git a/tests/ui/suggestions/bad-infer-in-trait-impl.rs b/tests/ui/suggestions/bad-infer-in-trait-impl.rs new file mode 100644 index 000000000000..87db2636fb24 --- /dev/null +++ b/tests/ui/suggestions/bad-infer-in-trait-impl.rs @@ -0,0 +1,10 @@ +trait Foo { + fn bar(); +} + +impl Foo for () { + fn bar(s: _) {} + //~^ ERROR the placeholder `_` is not allowed within types on item signatures for functions +} + +fn main() {} diff --git a/tests/ui/suggestions/bad-infer-in-trait-impl.stderr b/tests/ui/suggestions/bad-infer-in-trait-impl.stderr new file mode 100644 index 000000000000..418690ff85fa --- /dev/null +++ b/tests/ui/suggestions/bad-infer-in-trait-impl.stderr @@ -0,0 +1,14 @@ +error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions + --> $DIR/bad-infer-in-trait-impl.rs:6:15 + | +LL | fn bar(s: _) {} + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL | fn bar(s: T) {} + | +++ ~ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0121`. From dc39bf8efc06bda8f510d1d64ce3302acc7ac0a3 Mon Sep 17 00:00:00 2001 From: Jamilya Shurukhova Date: Thu, 16 Mar 2023 10:18:31 +0100 Subject: [PATCH 22/57] E0206 - added `union` to description --- compiler/rustc_error_codes/src/error_codes/E0206.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/compiler/rustc_error_codes/src/error_codes/E0206.md b/compiler/rustc_error_codes/src/error_codes/E0206.md index 4405a2149ceb..a0a6c0ffdceb 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0206.md +++ b/compiler/rustc_error_codes/src/error_codes/E0206.md @@ -1,5 +1,5 @@ The `Copy` trait was implemented on a type which is neither a struct nor an -enum. +enum nor a union. Erroneous code example: @@ -10,6 +10,6 @@ struct Bar; impl Copy for &'static mut Bar { } // error! ``` -You can only implement `Copy` for a struct or an enum. +You can only implement `Copy` for a struct, a union, or an enum. The previous example will fail because `&'static mut Bar` is not a struct or enum. From 1f12c3e397dd36c8ad7ea376f7e5a2aaaa3b7a26 Mon Sep 17 00:00:00 2001 From: Jamilya Shurukhova Date: Thu, 16 Mar 2023 10:26:34 +0100 Subject: [PATCH 23/57] E0206 - removed space --- compiler/rustc_error_codes/src/error_codes/E0206.md | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/compiler/rustc_error_codes/src/error_codes/E0206.md b/compiler/rustc_error_codes/src/error_codes/E0206.md index a0a6c0ffdceb..b3e5d6e28d8f 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0206.md +++ b/compiler/rustc_error_codes/src/error_codes/E0206.md @@ -1,5 +1,4 @@ -The `Copy` trait was implemented on a type which is neither a struct nor an -enum nor a union. +The `Copy` trait was implemented on a type which is neither a struct nor an enum nor a union. Erroneous code example: From a8839c3de79740ad76bad4439a5cc5169bf68d53 Mon Sep 17 00:00:00 2001 From: est31 Date: Thu, 16 Mar 2023 13:00:49 +0100 Subject: [PATCH 24/57] Use sort_by_key instead of sort_by I went over the cases where sort_by is used and in these two, one can use sort_by_key instead. --- compiler/rustc_borrowck/src/region_infer/mod.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/compiler/rustc_borrowck/src/region_infer/mod.rs b/compiler/rustc_borrowck/src/region_infer/mod.rs index 905d8c42b28b..dbf15a3e05fa 100644 --- a/compiler/rustc_borrowck/src/region_infer/mod.rs +++ b/compiler/rustc_borrowck/src/region_infer/mod.rs @@ -255,7 +255,7 @@ fn sccs_info<'cx, 'tcx>( let var_to_origin = infcx.reg_var_to_origin.borrow(); let mut var_to_origin_sorted = var_to_origin.clone().into_iter().collect::>(); - var_to_origin_sorted.sort_by(|a, b| a.0.cmp(&b.0)); + var_to_origin_sorted.sort_by_key(|vto| vto.0); let mut debug_str = "region variables to origins:\n".to_string(); for (reg_var, origin) in var_to_origin_sorted.into_iter() { debug_str.push_str(&format!("{:?}: {:?}\n", reg_var, origin)); @@ -2216,7 +2216,7 @@ impl<'tcx> RegionInferenceContext<'tcx> { // is in the same SCC or something. In that case, find what // appears to be the most interesting point to report to the // user via an even more ad-hoc guess. - categorized_path.sort_by(|p0, p1| p0.category.cmp(&p1.category)); + categorized_path.sort_by_key(|p| p.category); debug!("sorted_path={:#?}", categorized_path); (categorized_path.remove(0), extra_info) From 7a1a02ec9b0224f8ed51e6d259b9516a72a424fd Mon Sep 17 00:00:00 2001 From: DaniPopes <57450786+DaniPopes@users.noreply.github.com> Date: Thu, 16 Mar 2023 20:55:50 +0100 Subject: [PATCH 25/57] Fix invalid markdown link references --- src/librustdoc/html/templates/STYLE.md | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/src/librustdoc/html/templates/STYLE.md b/src/librustdoc/html/templates/STYLE.md index 72c516c93eb7..0281b1c47f8c 100644 --- a/src/librustdoc/html/templates/STYLE.md +++ b/src/librustdoc/html/templates/STYLE.md @@ -1,12 +1,12 @@ # Style for Templates -This directory has templates in the [Tera templating language](teradoc), which is very -similar to [Jinja2](jinjadoc) and [Django](djangodoc) templates, and also to [Askama](askamadoc). +This directory has templates in the [Tera templating language][teradoc], which is very +similar to [Jinja2][jinjadoc] and [Django][djangodoc] templates, and also to [Askama][askamadoc]. [teradoc]: https://tera.netlify.app/docs/#templates -[jinjadoc]: https://jinja.palletsprojects.com/en/3.0.x/templates/ -[djangodoc]: https://docs.djangoproject.com/en/3.2/topics/templates/ -[askamadoc]: https://docs.rs/askama/0.10.5/askama/ +[jinjadoc]: https://jinja.palletsprojects.com/en/3.1.x/templates/ +[djangodoc]: https://docs.djangoproject.com/en/4.1/topics/templates/ +[askamadoc]: https://docs.rs/askama/latest/askama/ We want our rendered output to have as little unnecessary whitespace as possible, so that pages load quickly. To achieve that we use Tera's @@ -30,8 +30,8 @@ contents don't necessarily need a new line. Askama templates support quite sophisticated control flow. To keep our templates simple and understandable, we use only a subset: `if` and `for`. In particular -we avoid [assignments in the template logic](assignments) and [Askama -macros](macros). This also may make things easier if we switch to a different +we avoid [assignments in the template logic][assignments] and [Askama +macros][macros]. This also may make things easier if we switch to a different Jinja-style template system, like Askama, in the future. [assignments]: https://djc.github.io/askama/template_syntax.html#assignments From 27b430bcb36e46cc5dcfd88ec6cec2639ad2467c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tomasz=20Mi=C4=85sko?= Date: Thu, 16 Mar 2023 00:00:00 +0000 Subject: [PATCH 26/57] Tweak implementation of overflow checking assertions Extract and reuse logic controlling behaviour of overflow checking assertions instead of duplicating it three times. --- compiler/rustc_codegen_cranelift/src/base.rs | 15 ++++----------- compiler/rustc_codegen_ssa/src/mir/block.rs | 11 ++--------- .../rustc_const_eval/src/interpret/machine.rs | 4 ++-- .../src/interpret/terminator.rs | 8 ++------ compiler/rustc_middle/src/mir/mod.rs | 17 +++++++---------- compiler/rustc_middle/src/mir/syntax.rs | 3 +-- src/tools/miri/src/machine.rs | 2 +- 7 files changed, 19 insertions(+), 41 deletions(-) diff --git a/compiler/rustc_codegen_cranelift/src/base.rs b/compiler/rustc_codegen_cranelift/src/base.rs index d0af3729b237..1b8e9312e2f5 100644 --- a/compiler/rustc_codegen_cranelift/src/base.rs +++ b/compiler/rustc_codegen_cranelift/src/base.rs @@ -346,17 +346,10 @@ fn codegen_fn_body(fx: &mut FunctionCx<'_, '_, '_>, start_block: Block) { crate::abi::codegen_return(fx); } TerminatorKind::Assert { cond, expected, msg, target, cleanup: _ } => { - if !fx.tcx.sess.overflow_checks() { - let overflow_not_to_check = match msg { - AssertKind::OverflowNeg(..) => true, - AssertKind::Overflow(op, ..) => op.is_checkable(), - _ => false, - }; - if overflow_not_to_check { - let target = fx.get_block(*target); - fx.bcx.ins().jump(target, &[]); - continue; - } + if !fx.tcx.sess.overflow_checks() && msg.is_optional_overflow_check() { + let target = fx.get_block(*target); + fx.bcx.ins().jump(target, &[]); + continue; } let cond = codegen_operand(fx, cond).load_scalar(fx); diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs index 71c71d59b7ab..f9aa2aecf65b 100644 --- a/compiler/rustc_codegen_ssa/src/mir/block.rs +++ b/compiler/rustc_codegen_ssa/src/mir/block.rs @@ -563,15 +563,8 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { // with #[rustc_inherit_overflow_checks] and inlined from // another crate (mostly core::num generic/#[inline] fns), // while the current crate doesn't use overflow checks. - if !bx.cx().check_overflow() { - let overflow_not_to_check = match msg { - AssertKind::OverflowNeg(..) => true, - AssertKind::Overflow(op, ..) => op.is_checkable(), - _ => false, - }; - if overflow_not_to_check { - const_cond = Some(expected); - } + if !bx.cx().check_overflow() && msg.is_optional_overflow_check() { + const_cond = Some(expected); } // Don't codegen the panic block if success if known. diff --git a/compiler/rustc_const_eval/src/interpret/machine.rs b/compiler/rustc_const_eval/src/interpret/machine.rs index 92fa59aec6e5..c134d3a6b2f2 100644 --- a/compiler/rustc_const_eval/src/interpret/machine.rs +++ b/compiler/rustc_const_eval/src/interpret/machine.rs @@ -155,7 +155,7 @@ pub trait Machine<'mir, 'tcx>: Sized { /// Whether Assert(OverflowNeg) and Assert(Overflow) MIR terminators should actually /// check for overflow. - fn ignore_checkable_overflow_assertions(_ecx: &InterpCx<'mir, 'tcx, Self>) -> bool; + fn ignore_optional_overflow_checks(_ecx: &InterpCx<'mir, 'tcx, Self>) -> bool; /// Entry point for obtaining the MIR of anything that should get evaluated. /// So not just functions and shims, but also const/static initializers, anonymous @@ -474,7 +474,7 @@ pub macro compile_time_machine(<$mir: lifetime, $tcx: lifetime>) { } #[inline(always)] - fn ignore_checkable_overflow_assertions(_ecx: &InterpCx<$mir, $tcx, Self>) -> bool { + fn ignore_optional_overflow_checks(_ecx: &InterpCx<$mir, $tcx, Self>) -> bool { false } diff --git a/compiler/rustc_const_eval/src/interpret/terminator.rs b/compiler/rustc_const_eval/src/interpret/terminator.rs index 685a5599cded..c2d1bc11c37b 100644 --- a/compiler/rustc_const_eval/src/interpret/terminator.rs +++ b/compiler/rustc_const_eval/src/interpret/terminator.rs @@ -138,12 +138,8 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { } Assert { ref cond, expected, ref msg, target, cleanup } => { - let ignored = M::ignore_checkable_overflow_assertions(self) - && match msg { - mir::AssertKind::OverflowNeg(..) => true, - mir::AssertKind::Overflow(op, ..) => op.is_checkable(), - _ => false, - }; + let ignored = + M::ignore_optional_overflow_checks(self) && msg.is_optional_overflow_check(); let cond_val = self.read_scalar(&self.eval_operand(cond, None)?)?.to_bool()?; if ignored || expected == cond_val { self.go_to_block(target); diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs index b34651c3ea79..3b26eb8a8ed3 100644 --- a/compiler/rustc_middle/src/mir/mod.rs +++ b/compiler/rustc_middle/src/mir/mod.rs @@ -1274,6 +1274,13 @@ impl<'tcx> BasicBlockData<'tcx> { } impl AssertKind { + /// Returns true if this an overflow checking assertion controlled by -C overflow-checks. + pub fn is_optional_overflow_check(&self) -> bool { + use AssertKind::*; + use BinOp::*; + matches!(self, OverflowNeg(..) | Overflow(Add | Sub | Mul | Shl | Shr, ..)) + } + /// Getting a description does not require `O` to be printable, and does not /// require allocation. /// The caller is expected to handle `BoundsCheck` separately. @@ -1998,16 +2005,6 @@ impl BorrowKind { } } -impl BinOp { - /// The checkable operators are those whose overflow checking behavior is controlled by - /// -Coverflow-checks option. The remaining operators have either no overflow conditions (e.g., - /// BitAnd, BitOr, BitXor) or are always checked for overflow (e.g., Div, Rem). - pub fn is_checkable(self) -> bool { - use self::BinOp::*; - matches!(self, Add | Sub | Mul | Shl | Shr) - } -} - impl<'tcx> Debug for Rvalue<'tcx> { fn fmt(&self, fmt: &mut Formatter<'_>) -> fmt::Result { use self::Rvalue::*; diff --git a/compiler/rustc_middle/src/mir/syntax.rs b/compiler/rustc_middle/src/mir/syntax.rs index a28ecfa9bdc4..b16b6616415a 100644 --- a/compiler/rustc_middle/src/mir/syntax.rs +++ b/compiler/rustc_middle/src/mir/syntax.rs @@ -646,8 +646,7 @@ pub enum TerminatorKind<'tcx> { /// When overflow checking is disabled and this is run-time MIR (as opposed to compile-time MIR /// that is used for CTFE), the following variants of this terminator behave as `goto target`: /// - `OverflowNeg(..)`, - /// - `Overflow(op, ..)` if op is a "checkable" operation (add, sub, mul, shl, shr, but NOT - /// div or rem). + /// - `Overflow(op, ..)` if op is add, sub, mul, shl, shr, but NOT div or rem. Assert { cond: Operand<'tcx>, expected: bool, diff --git a/src/tools/miri/src/machine.rs b/src/tools/miri/src/machine.rs index 969c81f7e32b..3a14704d9cc4 100644 --- a/src/tools/miri/src/machine.rs +++ b/src/tools/miri/src/machine.rs @@ -822,7 +822,7 @@ impl<'mir, 'tcx> Machine<'mir, 'tcx> for MiriMachine<'mir, 'tcx> { } #[inline(always)] - fn ignore_checkable_overflow_assertions(ecx: &MiriInterpCx<'mir, 'tcx>) -> bool { + fn ignore_optional_overflow_checks(ecx: &MiriInterpCx<'mir, 'tcx>) -> bool { !ecx.tcx.sess.overflow_checks() } From 827a990255b49a5a6eee67844fbbeaeb323236b4 Mon Sep 17 00:00:00 2001 From: yukang Date: Thu, 16 Mar 2023 23:17:56 +0800 Subject: [PATCH 27/57] Do not ICE for unexpected lifetime with ConstGeneric rib --- compiler/rustc_resolve/src/late.rs | 5 +++-- .../ui/lifetimes/unusual-rib-combinations.rs | 5 +++++ .../lifetimes/unusual-rib-combinations.stderr | 21 +++++++++++++++++-- 3 files changed, 27 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index eff10e5af9fe..1afd8851ce06 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -1478,8 +1478,9 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { } else { LifetimeUseSet::Many }), - LifetimeRibKind::Generics { .. } => None, - LifetimeRibKind::ConstGeneric | LifetimeRibKind::AnonConst => { + LifetimeRibKind::Generics { .. } + | LifetimeRibKind::ConstGeneric => None, + LifetimeRibKind::AnonConst => { span_bug!(ident.span, "unexpected rib kind: {:?}", rib.kind) } }) diff --git a/tests/ui/lifetimes/unusual-rib-combinations.rs b/tests/ui/lifetimes/unusual-rib-combinations.rs index 1c122f42e592..0ae68ad04f75 100644 --- a/tests/ui/lifetimes/unusual-rib-combinations.rs +++ b/tests/ui/lifetimes/unusual-rib-combinations.rs @@ -25,4 +25,9 @@ fn d() {} //~^ ERROR missing lifetime specifier //~| ERROR `S<'_>` is forbidden as the type of a const generic parameter +trait Foo<'a> {} +struct Bar Foo<'a>)>; +//~^ ERROR use of non-static lifetime `'a` in const generic +//~| ERROR `&dyn for<'a> Foo<'a>` is forbidden as the type of a const generic parameter + fn main() {} diff --git a/tests/ui/lifetimes/unusual-rib-combinations.stderr b/tests/ui/lifetimes/unusual-rib-combinations.stderr index 68f4fce0178e..20163d289b13 100644 --- a/tests/ui/lifetimes/unusual-rib-combinations.stderr +++ b/tests/ui/lifetimes/unusual-rib-combinations.stderr @@ -9,6 +9,14 @@ help: consider introducing a named lifetime parameter LL | fn d<'a, const C: S<'a>>() {} | +++ ++++ +error[E0771]: use of non-static lifetime `'a` in const generic + --> $DIR/unusual-rib-combinations.rs:29:22 + | +LL | struct Bar Foo<'a>)>; + | ^^ + | + = note: for more information, see issue #74052 + error[E0214]: parenthesized type parameters may only be used with a `Fn` trait --> $DIR/unusual-rib-combinations.rs:7:16 | @@ -55,7 +63,16 @@ LL | fn d() {} = note: the only supported types are integers, `bool` and `char` = help: more complex types are supported with `#![feature(adt_const_params)]` -error: aborting due to 7 previous errors +error: `&dyn for<'a> Foo<'a>` is forbidden as the type of a const generic parameter + --> $DIR/unusual-rib-combinations.rs:29:21 + | +LL | struct Bar Foo<'a>)>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the only supported types are integers, `bool` and `char` + = help: more complex types are supported with `#![feature(adt_const_params)]` -Some errors have detailed explanations: E0106, E0214, E0308. +error: aborting due to 9 previous errors + +Some errors have detailed explanations: E0106, E0214, E0308, E0771. For more information about an error, try `rustc --explain E0106`. From 2dbda0af15f95c5e816f9357c59fad3576e1a45a Mon Sep 17 00:00:00 2001 From: NagaChaitanya Vellanki Date: Thu, 16 Mar 2023 15:08:14 -0700 Subject: [PATCH 28/57] fallback to lstat when stat fails on Windows --- library/std/src/sys/windows/fs.rs | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/library/std/src/sys/windows/fs.rs b/library/std/src/sys/windows/fs.rs index d2c597664fa7..a4161c1c3c4c 100644 --- a/library/std/src/sys/windows/fs.rs +++ b/library/std/src/sys/windows/fs.rs @@ -1236,7 +1236,19 @@ pub fn link(_original: &Path, _link: &Path) -> io::Result<()> { } pub fn stat(path: &Path) -> io::Result { - metadata(path, ReparsePoint::Follow) + match metadata(path, ReparsePoint::Follow) { + Err(err) => { + if err.raw_os_error() == Some(c::ERROR_CANT_ACCESS_FILE as i32) { + if let Ok(attrs) = lstat(path) { + if !attrs.file_type().is_symlink() { + return Ok(attrs); + } + } + } + Err(err) + }, + Ok(attrs) => Ok(attrs), + } } pub fn lstat(path: &Path) -> io::Result { From 0aad0b32ae05d7d03d0c18c7083edf02c7e3f857 Mon Sep 17 00:00:00 2001 From: NagaChaitanya Vellanki Date: Thu, 16 Mar 2023 17:07:41 -0700 Subject: [PATCH 29/57] run rustfmt on changes --- library/std/src/sys/windows/fs.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/library/std/src/sys/windows/fs.rs b/library/std/src/sys/windows/fs.rs index a4161c1c3c4c..ef8f73645be7 100644 --- a/library/std/src/sys/windows/fs.rs +++ b/library/std/src/sys/windows/fs.rs @@ -1246,7 +1246,7 @@ pub fn stat(path: &Path) -> io::Result { } } Err(err) - }, + } Ok(attrs) => Ok(attrs), } } From 550e3087d1b521f2b3b669ebaaf6d16e4c593fca Mon Sep 17 00:00:00 2001 From: Mu42 Date: Fri, 17 Mar 2023 14:36:22 +0800 Subject: [PATCH 30/57] Suggest surrounding the macro with `{}` to interpret as a statement --- compiler/rustc_expand/src/mbe/diagnostics.rs | 24 +++++++++++++++----- tests/ui/macros/issue-109237.rs | 7 ++++++ tests/ui/macros/issue-109237.stderr | 18 +++++++++++++++ 3 files changed, 43 insertions(+), 6 deletions(-) create mode 100644 tests/ui/macros/issue-109237.rs create mode 100644 tests/ui/macros/issue-109237.stderr diff --git a/compiler/rustc_expand/src/mbe/diagnostics.rs b/compiler/rustc_expand/src/mbe/diagnostics.rs index b1d9cea27739..6bc393c6534f 100644 --- a/compiler/rustc_expand/src/mbe/diagnostics.rs +++ b/compiler/rustc_expand/src/mbe/diagnostics.rs @@ -245,12 +245,24 @@ pub(super) fn emit_frag_parse_err( e.note( "the macro call doesn't expand to an expression, but it can expand to a statement", ); - e.span_suggestion_verbose( - site_span.shrink_to_hi(), - "add `;` to interpret the expansion as a statement", - ";", - Applicability::MaybeIncorrect, - ); + + if parser.token == token::Semi { + if let Ok(snippet) = parser.sess.source_map().span_to_snippet(site_span) { + e.span_suggestion_verbose( + site_span, + "surround the macro invocation with `{}` to interpret the expansion as a statement", + format!("{{ {}; }}", snippet), + Applicability::MaybeIncorrect, + ); + } + } else { + e.span_suggestion_verbose( + site_span.shrink_to_hi(), + "add `;` to interpret the expansion as a statement", + ";", + Applicability::MaybeIncorrect, + ); + } } }, _ => annotate_err_with_kind(&mut e, kind, site_span), diff --git a/tests/ui/macros/issue-109237.rs b/tests/ui/macros/issue-109237.rs new file mode 100644 index 000000000000..86a193c9e44a --- /dev/null +++ b/tests/ui/macros/issue-109237.rs @@ -0,0 +1,7 @@ +macro_rules! statement { + () => {;}; //~ ERROR expected expression +} + +fn main() { + let _ = statement!(); +} diff --git a/tests/ui/macros/issue-109237.stderr b/tests/ui/macros/issue-109237.stderr new file mode 100644 index 000000000000..d125cff63eab --- /dev/null +++ b/tests/ui/macros/issue-109237.stderr @@ -0,0 +1,18 @@ +error: expected expression, found `;` + --> $DIR/issue-109237.rs:2:12 + | +LL | () => {;}; + | ^ expected expression +... +LL | let _ = statement!(); + | ------------ in this macro invocation + | + = note: the macro call doesn't expand to an expression, but it can expand to a statement + = note: this error originates in the macro `statement` (in Nightly builds, run with -Z macro-backtrace for more info) +help: surround the macro invocation with `{}` to interpret the expansion as a statement + | +LL | let _ = { statement!(); }; + | ~~~~~~~~~~~~~~~~~ + +error: aborting due to previous error + From a8a7f847b9a58e57baf80e2a7160eaa3c29a8945 Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Mon, 6 Mar 2023 09:14:13 +0100 Subject: [PATCH 31/57] Update host compiler to LLVM 16 This updates the host compiler for dist-x86_64-linux to LLVM 16, pulling in the BOLT fix at https://github.com/llvm/llvm-project/commit/1de305da428598d79b7d2d9e70962130142f7ca4, which is needed to update Rust to LLVM 16. --- src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh b/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh index 9abfd4e97311..de0fb95efd07 100755 --- a/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh +++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh @@ -4,7 +4,7 @@ set -ex source shared.sh -LLVM=llvmorg-15.0.0 +LLVM=llvmorg-16.0.0-rc4 mkdir llvm-project cd llvm-project From f4f322c6741f3fc3221642516dd9838eeadc8e57 Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Mon, 23 Jan 2023 11:33:33 +0100 Subject: [PATCH 32/57] Upgrade to LLVM 16 --- .gitmodules | 2 +- src/llvm-project | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/.gitmodules b/.gitmodules index e79f2f089c1e..0bbccb571302 100644 --- a/.gitmodules +++ b/.gitmodules @@ -25,7 +25,7 @@ [submodule "src/llvm-project"] path = src/llvm-project url = https://github.com/rust-lang/llvm-project.git - branch = rustc/15.0-2022-12-07 + branch = rustc/16.0-2023-03-06 [submodule "src/doc/embedded-book"] path = src/doc/embedded-book url = https://github.com/rust-embedded/book.git diff --git a/src/llvm-project b/src/llvm-project index fd949f3034f8..4bb5eab6ac3f 160000 --- a/src/llvm-project +++ b/src/llvm-project @@ -1 +1 @@ -Subproject commit fd949f3034f8a422ecfffa889c2823485dde4bdd +Subproject commit 4bb5eab6ac3faea4ab4e53c432a1643c3acec87e From 183f00c25e209f3dc8912cf505833d519344d726 Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Sat, 11 Mar 2023 16:51:33 +0100 Subject: [PATCH 33/57] Initialize rust_info before is_ci_llvm_available() --- src/bootstrap/config.rs | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs index 58729f396f0b..0fee094c2223 100644 --- a/src/bootstrap/config.rs +++ b/src/bootstrap/config.rs @@ -1153,6 +1153,11 @@ impl Config { config.rust_profile_generate = flags.rust_profile_generate; } + // rust_info must be set before is_ci_llvm_available() is called. + let default = config.channel == "dev"; + config.ignore_git = ignore_git.unwrap_or(default); + config.rust_info = GitInfo::new(config.ignore_git, &config.src); + if let Some(llvm) = toml.llvm { match llvm.ccache { Some(StringOrBool::String(ref s)) => config.ccache = Some(s.to_string()), @@ -1346,10 +1351,6 @@ impl Config { config.rust_debuginfo_level_tools = with_defaults(debuginfo_level_tools); config.rust_debuginfo_level_tests = debuginfo_level_tests.unwrap_or(0); - let default = config.channel == "dev"; - config.ignore_git = ignore_git.unwrap_or(default); - config.rust_info = GitInfo::new(config.ignore_git, &config.src); - let download_rustc = config.download_rustc_commit.is_some(); // See https://github.com/rust-lang/compiler-team/issues/326 config.stage = match config.cmd { From b238a76f652390a486e5480b791abe0cd427add5 Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Wed, 15 Mar 2023 17:20:56 +0100 Subject: [PATCH 34/57] Increase array size in array-map.rs Make sure that the loop is not fully unrolled (which allows eliminating the allocas) in LLVM 16 either. --- tests/codegen/array-map.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/codegen/array-map.rs b/tests/codegen/array-map.rs index 9298e89e397d..7b8ab2c79a7f 100644 --- a/tests/codegen/array-map.rs +++ b/tests/codegen/array-map.rs @@ -38,10 +38,10 @@ pub fn short_integer_zip_map(x: [u32; 8], y: [u32; 8]) -> [u32; 8] { // // CHECK-LABEL: @long_integer_map #[no_mangle] -pub fn long_integer_map(x: [u32; 64]) -> [u32; 64] { +pub fn long_integer_map(x: [u32; 512]) -> [u32; 512] { // CHECK: start: - // CHECK-NEXT: alloca [64 x i32] - // CHECK-NEXT: alloca %"core::mem::manually_drop::ManuallyDrop<[u32; 64]>" + // CHECK-NEXT: alloca [512 x i32] + // CHECK-NEXT: alloca %"core::mem::manually_drop::ManuallyDrop<[u32; 512]>" // CHECK-NOT: alloca // CHECK: mul <{{[0-9]+}} x i32> // CHECK: add <{{[0-9]+}} x i32> From 97740a648f57e24c45f641f2827598b26a2bf661 Mon Sep 17 00:00:00 2001 From: NagaChaitanya Vellanki Date: Fri, 17 Mar 2023 02:33:31 -0700 Subject: [PATCH 35/57] Check for llvm-tools before install --- src/bootstrap/install.rs | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/src/bootstrap/install.rs b/src/bootstrap/install.rs index ac3843c3344e..42d895a3413f 100644 --- a/src/bootstrap/install.rs +++ b/src/bootstrap/install.rs @@ -210,10 +210,13 @@ install!((self, builder, _config), } }; LlvmTools, alias = "llvm-tools", Self::should_build(_config), only_hosts: true, { - let tarball = builder - .ensure(dist::LlvmTools { target: self.target }) - .expect("missing llvm-tools"); - install_sh(builder, "llvm-tools", self.compiler.stage, Some(self.target), &tarball); + if let Some(tarball) = builder.ensure(dist::LlvmTools { target: self.target }) { + install_sh(builder, "llvm-tools", self.compiler.stage, Some(self.target), &tarball); + } else { + builder.info( + &format!("skipping llvm-tools stage{} ({}): external LLVM", self.compiler.stage, self.target), + ); + } }; Rustfmt, alias = "rustfmt", Self::should_build(_config), only_hosts: true, { if let Some(tarball) = builder.ensure(dist::Rustfmt { From 2a5208011d2a78d441bb72492812f618a8c24cfb Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Fri, 17 Mar 2023 13:34:15 +0400 Subject: [PATCH 36/57] resolve: Improve debug impls for `NameBinding` Print at least the Some/None/Ok/Err status of the nested bindings if not the bindings themselves. --- compiler/rustc_resolve/src/imports.rs | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_resolve/src/imports.rs b/compiler/rustc_resolve/src/imports.rs index 5d40c6e4e486..6e27bcc5bf3d 100644 --- a/compiler/rustc_resolve/src/imports.rs +++ b/compiler/rustc_resolve/src/imports.rs @@ -85,20 +85,28 @@ impl<'a> std::fmt::Debug for ImportKind<'a> { Single { ref source, ref target, + ref source_bindings, + ref target_bindings, ref type_ns_only, ref nested, ref id, - // Ignore the following to avoid an infinite loop while printing. - source_bindings: _, - target_bindings: _, } => f .debug_struct("Single") .field("source", source) .field("target", target) + // Ignore the nested bindings to avoid an infinite loop while printing. + .field( + "source_bindings", + &source_bindings.clone().map(|b| b.into_inner().map(|_| format_args!(".."))), + ) + .field( + "target_bindings", + &target_bindings.clone().map(|b| b.into_inner().map(|_| format_args!(".."))), + ) .field("type_ns_only", type_ns_only) .field("nested", nested) .field("id", id) - .finish_non_exhaustive(), + .finish(), Glob { ref is_prelude, ref max_vis, ref id } => f .debug_struct("Glob") .field("is_prelude", is_prelude) From 05dc132adb94c0583423ea0cbe25c67af4fdb1dd Mon Sep 17 00:00:00 2001 From: Jamilya Shurukhova Date: Fri, 17 Mar 2023 14:54:39 +0100 Subject: [PATCH 37/57] E0206 - code review changes --- compiler/rustc_error_codes/src/error_codes/E0206.md | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/compiler/rustc_error_codes/src/error_codes/E0206.md b/compiler/rustc_error_codes/src/error_codes/E0206.md index b3e5d6e28d8f..8658b5a858a0 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0206.md +++ b/compiler/rustc_error_codes/src/error_codes/E0206.md @@ -1,4 +1,5 @@ -The `Copy` trait was implemented on a type which is neither a struct nor an enum nor a union. +The `Copy` trait was implemented on a type which is neither a struct, an +enum, nor a union. Erroneous code example: @@ -9,6 +10,6 @@ struct Bar; impl Copy for &'static mut Bar { } // error! ``` -You can only implement `Copy` for a struct, a union, or an enum. +You can only implement `Copy` for a struct, an enum, or a union. The previous example will fail because `&'static mut Bar` -is not a struct or enum. +is not a struct, an enum, or a union. From c4bb47ac36aa3975160ba8fb72978202e436a2f9 Mon Sep 17 00:00:00 2001 From: Jamilya Shurukhova Date: Fri, 17 Mar 2023 15:50:37 +0100 Subject: [PATCH 38/57] Update compiler/rustc_error_codes/src/error_codes/E0206.md Co-authored-by: Waffle Maybe --- compiler/rustc_error_codes/src/error_codes/E0206.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_error_codes/src/error_codes/E0206.md b/compiler/rustc_error_codes/src/error_codes/E0206.md index 8658b5a858a0..9e85234bdbb3 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0206.md +++ b/compiler/rustc_error_codes/src/error_codes/E0206.md @@ -1,4 +1,4 @@ -The `Copy` trait was implemented on a type which is neither a struct, an +The `Copy` trait was implemented on a type which is neither a struct, an enum, nor a union. Erroneous code example: From 79ad7cca453468458a0ae63d091cbe6b23aa94a1 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Mon, 13 Mar 2023 20:37:04 +0000 Subject: [PATCH 39/57] Erase escaping late-bound regions when probing for ambiguous associated types --- compiler/rustc_hir_analysis/src/astconv/mod.rs | 17 ++++++++++++++--- .../non_lifetime_binders/missing-assoc-item.rs | 11 +++++++++++ .../missing-assoc-item.stderr | 18 ++++++++++++++++++ 3 files changed, 43 insertions(+), 3 deletions(-) create mode 100644 tests/ui/traits/non_lifetime_binders/missing-assoc-item.rs create mode 100644 tests/ui/traits/non_lifetime_binders/missing-assoc-item.stderr diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs index f830269b45da..d820a3da5550 100644 --- a/compiler/rustc_hir_analysis/src/astconv/mod.rs +++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs @@ -2396,13 +2396,24 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { tcx, infcx.fresh_substs_for_item(DUMMY_SP, impl_def_id), ); + // I guess we don't need to make a universe unless we need it, + // but also we're on the error path, so it doesn't matter here. + let universe = infcx.create_next_universe(); infcx .can_eq( ty::ParamEnv::empty(), impl_.self_ty(), - // Must fold past escaping bound vars too, - // since we have those at this point in astconv. - tcx.fold_regions(qself_ty, |_, _| tcx.lifetimes.re_erased), + tcx.replace_escaping_bound_vars_uncached(qself_ty, ty::fold::FnMutDelegate { + regions: &mut |_| tcx.lifetimes.re_erased, + types: &mut |bv| tcx.mk_placeholder(ty::PlaceholderType { + universe, + name: bv.kind, + }), + consts: &mut |bv, ty| tcx.mk_const(ty::PlaceholderConst { + universe, + name: bv + }, ty), + }) ) }) && tcx.impl_polarity(impl_def_id) != ty::ImplPolarity::Negative diff --git a/tests/ui/traits/non_lifetime_binders/missing-assoc-item.rs b/tests/ui/traits/non_lifetime_binders/missing-assoc-item.rs new file mode 100644 index 000000000000..50f0152e904f --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/missing-assoc-item.rs @@ -0,0 +1,11 @@ +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +fn f() +where + for B::Item: Send, + //~^ ERROR ambiguous associated type +{ +} + +fn main() {} diff --git a/tests/ui/traits/non_lifetime_binders/missing-assoc-item.stderr b/tests/ui/traits/non_lifetime_binders/missing-assoc-item.stderr new file mode 100644 index 000000000000..be6955c111e8 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/missing-assoc-item.stderr @@ -0,0 +1,18 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/missing-assoc-item.rs:1:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0223]: ambiguous associated type + --> $DIR/missing-assoc-item.rs:6:12 + | +LL | for B::Item: Send, + | ^^^^^^^ help: use the fully-qualified path: `::Item` + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0223`. From 08c913279fc21e57acd210a98dfdfd740e86b565 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Fri, 17 Mar 2023 03:14:27 +0000 Subject: [PATCH 40/57] Pass the right HIR back from get_fn_decl --- compiler/rustc_hir_typeck/src/_match.rs | 2 +- compiler/rustc_hir_typeck/src/coercion.rs | 19 +++--- compiler/rustc_hir_typeck/src/expr.rs | 2 +- .../rustc_hir_typeck/src/fn_ctxt/_impl.rs | 61 +++++++++++++------ .../rustc_hir_typeck/src/fn_ctxt/checks.rs | 2 +- .../src/fn_ctxt/suggestions.rs | 3 +- .../suggest-ret-on-async-w-late.rs | 11 ++++ .../suggest-ret-on-async-w-late.stderr | 11 ++++ 8 files changed, 75 insertions(+), 36 deletions(-) create mode 100644 tests/ui/suggestions/suggest-ret-on-async-w-late.rs create mode 100644 tests/ui/suggestions/suggest-ret-on-async-w-late.stderr diff --git a/compiler/rustc_hir_typeck/src/_match.rs b/compiler/rustc_hir_typeck/src/_match.rs index e19ef2ff3bf4..035ccf30b246 100644 --- a/compiler/rustc_hir_typeck/src/_match.rs +++ b/compiler/rustc_hir_typeck/src/_match.rs @@ -299,7 +299,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { { // check that the `if` expr without `else` is the fn body's expr if expr.span == sp { - return self.get_fn_decl(hir_id).and_then(|(fn_decl, _)| { + return self.get_fn_decl(hir_id).and_then(|(_, fn_decl, _)| { let span = fn_decl.output.span(); let snippet = self.tcx.sess.source_map().span_to_snippet(span).ok()?; Some((span, format!("expected `{snippet}` because of this return type"))) diff --git a/compiler/rustc_hir_typeck/src/coercion.rs b/compiler/rustc_hir_typeck/src/coercion.rs index 3d6274ede814..a27905ea46c9 100644 --- a/compiler/rustc_hir_typeck/src/coercion.rs +++ b/compiler/rustc_hir_typeck/src/coercion.rs @@ -1722,12 +1722,13 @@ impl<'tcx, 'exprs, E: AsCoercionSite> CoerceMany<'tcx, 'exprs, E> { fcx.suggest_semicolon_at_end(cond_expr.span, &mut err); } } - fcx.get_node_fn_decl(parent).map(|(fn_decl, _, is_main)| (fn_decl, is_main)) + fcx.get_node_fn_decl(parent) + .map(|(fn_id, fn_decl, _, is_main)| (fn_id, fn_decl, is_main)) } else { fcx.get_fn_decl(parent_id) }; - if let Some((fn_decl, can_suggest)) = fn_decl { + if let Some((fn_id, fn_decl, can_suggest)) = fn_decl { if blk_id.is_none() { pointing_at_return_type |= fcx.suggest_missing_return_type( &mut err, @@ -1735,7 +1736,7 @@ impl<'tcx, 'exprs, E: AsCoercionSite> CoerceMany<'tcx, 'exprs, E> { expected, found, can_suggest, - fcx.tcx.hir().get_parent_item(id).into(), + fn_id, ); } if !pointing_at_return_type { @@ -1746,17 +1747,11 @@ impl<'tcx, 'exprs, E: AsCoercionSite> CoerceMany<'tcx, 'exprs, E> { let parent_id = fcx.tcx.hir().get_parent_item(id); let parent_item = fcx.tcx.hir().get_by_def_id(parent_id.def_id); - if let (Some(expr), Some(_), Some((fn_decl, _, _))) = + if let (Some(expr), Some(_), Some((fn_id, fn_decl, _, _))) = (expression, blk_id, fcx.get_node_fn_decl(parent_item)) { fcx.suggest_missing_break_or_return_expr( - &mut err, - expr, - fn_decl, - expected, - found, - id, - parent_id.into(), + &mut err, expr, fn_decl, expected, found, id, fn_id, ); } @@ -1882,7 +1877,7 @@ impl<'tcx, 'exprs, E: AsCoercionSite> CoerceMany<'tcx, 'exprs, E> { } fn is_return_ty_unsized<'a>(&self, fcx: &FnCtxt<'a, 'tcx>, blk_id: hir::HirId) -> bool { - if let Some((fn_decl, _)) = fcx.get_fn_decl(blk_id) + if let Some((_, fn_decl, _)) = fcx.get_fn_decl(blk_id) && let hir::FnRetTy::Return(ty) = fn_decl.output && let ty = fcx.astconv().ast_ty_to_ty( ty) && let ty::Dynamic(..) = ty.kind() diff --git a/compiler/rustc_hir_typeck/src/expr.rs b/compiler/rustc_hir_typeck/src/expr.rs index afef331ec1d9..d64b5728f325 100644 --- a/compiler/rustc_hir_typeck/src/expr.rs +++ b/compiler/rustc_hir_typeck/src/expr.rs @@ -799,7 +799,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { self.ret_coercion_span.set(Some(expr.span)); } let cause = self.cause(expr.span, ObligationCauseCode::ReturnNoExpression); - if let Some((fn_decl, _)) = self.get_fn_decl(expr.hir_id) { + if let Some((_, fn_decl, _)) = self.get_fn_decl(expr.hir_id) { coercion.coerce_forced_unit( self, &cause, diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs index e539693402af..8455076de563 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs @@ -898,51 +898,74 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { ) } - /// Given a function `Node`, return its `FnDecl` if it exists, or `None` otherwise. + /// Given a function `Node`, return its `HirId` and `FnDecl` if it exists. Given a closure + /// that is the child of a function, return that function's `HirId` and `FnDecl` instead. + /// This may seem confusing at first, but this is used in diagnostics for `async fn`, + /// for example, where most of the type checking actually happens within a nested closure, + /// but we often want access to the parent function's signature. + /// + /// Otherwise, return false. pub(in super::super) fn get_node_fn_decl( &self, node: Node<'tcx>, - ) -> Option<(&'tcx hir::FnDecl<'tcx>, Ident, bool)> { + ) -> Option<(hir::HirId, &'tcx hir::FnDecl<'tcx>, Ident, bool)> { match node { - Node::Item(&hir::Item { ident, kind: hir::ItemKind::Fn(ref sig, ..), .. }) => { + Node::Item(&hir::Item { + ident, + kind: hir::ItemKind::Fn(ref sig, ..), + owner_id, + .. + }) => { // This is less than ideal, it will not suggest a return type span on any // method called `main`, regardless of whether it is actually the entry point, // but it will still present it as the reason for the expected type. - Some((&sig.decl, ident, ident.name != sym::main)) + Some(( + hir::HirId::make_owner(owner_id.def_id), + &sig.decl, + ident, + ident.name != sym::main, + )) } Node::TraitItem(&hir::TraitItem { ident, kind: hir::TraitItemKind::Fn(ref sig, ..), + owner_id, .. - }) => Some((&sig.decl, ident, true)), + }) => Some((hir::HirId::make_owner(owner_id.def_id), &sig.decl, ident, true)), Node::ImplItem(&hir::ImplItem { ident, kind: hir::ImplItemKind::Fn(ref sig, ..), + owner_id, .. - }) => Some((&sig.decl, ident, false)), - Node::Expr(&hir::Expr { - hir_id, - kind: hir::ExprKind::Closure(..), - .. - }) if let Some(Node::Item(&hir::Item { + }) => Some((hir::HirId::make_owner(owner_id.def_id), &sig.decl, ident, false)), + Node::Expr(&hir::Expr { hir_id, kind: hir::ExprKind::Closure(..), .. }) + if let Some(Node::Item(&hir::Item { + ident, + kind: hir::ItemKind::Fn(ref sig, ..), + owner_id, + .. + })) = self.tcx.hir().find_parent(hir_id) => Some(( + hir::HirId::make_owner(owner_id.def_id), + &sig.decl, ident, - kind: hir::ItemKind::Fn(ref sig, ..), - .. - })) = self.tcx.hir().find_parent(hir_id) => { - Some((&sig.decl, ident, ident.name != sym::main)) - }, + ident.name != sym::main, + )), _ => None, } } - /// Given a `HirId`, return the `FnDecl` of the method it is enclosed by and whether a + /// Given a `HirId`, return the `HirId` of the enclosing function, its `FnDecl`, and whether a /// suggestion can be made, `None` otherwise. - pub fn get_fn_decl(&self, blk_id: hir::HirId) -> Option<(&'tcx hir::FnDecl<'tcx>, bool)> { + pub fn get_fn_decl( + &self, + blk_id: hir::HirId, + ) -> Option<(hir::HirId, &'tcx hir::FnDecl<'tcx>, bool)> { // Get enclosing Fn, if it is a function or a trait method, unless there's a `loop` or // `while` before reaching it, as block tail returns are not available in them. self.tcx.hir().get_return_block(blk_id).and_then(|blk_id| { let parent = self.tcx.hir().get(blk_id); - self.get_node_fn_decl(parent).map(|(fn_decl, _, is_main)| (fn_decl, is_main)) + self.get_node_fn_decl(parent) + .map(|(fn_id, fn_decl, _, is_main)| (fn_id, fn_decl, is_main)) }) } diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs index 7064ff653848..61338ac613ae 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs @@ -1669,7 +1669,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { /// Given a function block's `HirId`, returns its `FnDecl` if it exists, or `None` otherwise. fn get_parent_fn_decl(&self, blk_id: hir::HirId) -> Option<(&'tcx hir::FnDecl<'tcx>, Ident)> { let parent = self.tcx.hir().get_by_def_id(self.tcx.hir().get_parent_item(blk_id).def_id); - self.get_node_fn_decl(parent).map(|(fn_decl, ident, _)| (fn_decl, ident)) + self.get_node_fn_decl(parent).map(|(_, fn_decl, ident, _)| (fn_decl, ident)) } /// If `expr` is a `match` expression that has only one non-`!` arm, use that arm's tail diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs index 690d8a238261..7a09ea40d797 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs @@ -64,8 +64,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let expr = expr.peel_drop_temps(); self.suggest_missing_semicolon(err, expr, expected, false); let mut pointing_at_return_type = false; - if let Some((fn_decl, can_suggest)) = self.get_fn_decl(blk_id) { - let fn_id = self.tcx.hir().get_return_block(blk_id).unwrap(); + if let Some((fn_id, fn_decl, can_suggest)) = self.get_fn_decl(blk_id) { pointing_at_return_type = self.suggest_missing_return_type( err, &fn_decl, diff --git a/tests/ui/suggestions/suggest-ret-on-async-w-late.rs b/tests/ui/suggestions/suggest-ret-on-async-w-late.rs new file mode 100644 index 000000000000..459b94f943b5 --- /dev/null +++ b/tests/ui/suggestions/suggest-ret-on-async-w-late.rs @@ -0,0 +1,11 @@ +// edition: 2021 + +// Make sure we don't ICE when suggesting a return type +// for an async fn that has late-bound vars... + +async fn ice(_: &i32) { + true + //~^ ERROR mismatched types +} + +fn main() {} diff --git a/tests/ui/suggestions/suggest-ret-on-async-w-late.stderr b/tests/ui/suggestions/suggest-ret-on-async-w-late.stderr new file mode 100644 index 000000000000..bff864b222bf --- /dev/null +++ b/tests/ui/suggestions/suggest-ret-on-async-w-late.stderr @@ -0,0 +1,11 @@ +error[E0308]: mismatched types + --> $DIR/suggest-ret-on-async-w-late.rs:7:5 + | +LL | async fn ice(_: &i32) { + | - help: try adding a return type: `-> bool` +LL | true + | ^^^^ expected `()`, found `bool` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0308`. From 32c589b2363eb96649e5692b4b335777dbeb2f9d Mon Sep 17 00:00:00 2001 From: NagaChaitanya Vellanki Date: Fri, 17 Mar 2023 10:44:22 -0700 Subject: [PATCH 41/57] Modify code style as per comments --- library/std/src/sys/windows/fs.rs | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/library/std/src/sys/windows/fs.rs b/library/std/src/sys/windows/fs.rs index ef8f73645be7..373157bd9e83 100644 --- a/library/std/src/sys/windows/fs.rs +++ b/library/std/src/sys/windows/fs.rs @@ -1237,17 +1237,15 @@ pub fn link(_original: &Path, _link: &Path) -> io::Result<()> { pub fn stat(path: &Path) -> io::Result { match metadata(path, ReparsePoint::Follow) { - Err(err) => { - if err.raw_os_error() == Some(c::ERROR_CANT_ACCESS_FILE as i32) { - if let Ok(attrs) = lstat(path) { - if !attrs.file_type().is_symlink() { - return Ok(attrs); - } + Err(err) if err.raw_os_error() == Some(c::ERROR_CANT_ACCESS_FILE as i32) => { + if let Ok(attrs) = lstat(path) { + if !attrs.file_type().is_symlink() { + return Ok(attrs); } } Err(err) } - Ok(attrs) => Ok(attrs), + result => result, } } From c7cc1c7442bc09e3c1a37f737790994c1084ad2a Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Thu, 16 Mar 2023 19:35:27 -0300 Subject: [PATCH 42/57] Fix generics mismatch errors for RPITITs on -Zlower-impl-trait-in-trait-to-assoc-ty --- .../src/check/compare_impl_item.rs | 11 +++++++++++ ...match.stderr => generics-mismatch.current.stderr} | 2 +- .../in-trait/generics-mismatch.next.stderr | 12 ++++++++++++ tests/ui/impl-trait/in-trait/generics-mismatch.rs | 3 +++ 4 files changed, 27 insertions(+), 1 deletion(-) rename tests/ui/impl-trait/in-trait/{generics-mismatch.stderr => generics-mismatch.current.stderr} (90%) create mode 100644 tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr diff --git a/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs b/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs index 6e6f8c1533bf..32b6aeed5f8c 100644 --- a/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs +++ b/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs @@ -1205,6 +1205,17 @@ fn compare_number_of_generics<'tcx>( return Ok(()); } + // We never need to emit a separate error for RPITITs, since if an RPITIT + // has mismatched type or const generic arguments, then the method that it's + // inheriting the generics from will also have mismatched arguments, and + // we'll report an error for that instead. Delay a bug for safety, though. + if tcx.opt_rpitit_info(trait_.def_id).is_some() { + return Err(tcx.sess.delay_span_bug( + rustc_span::DUMMY_SP, + "errors comparing numbers of generics of trait/impl functions were not emitted", + )); + } + let matchings = [ ("type", trait_own_counts.types, impl_own_counts.types), ("const", trait_own_counts.consts, impl_own_counts.consts), diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.stderr b/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr similarity index 90% rename from tests/ui/impl-trait/in-trait/generics-mismatch.stderr rename to tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr index cd42683e0224..310edbcb6cd1 100644 --- a/tests/ui/impl-trait/in-trait/generics-mismatch.stderr +++ b/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr @@ -1,5 +1,5 @@ error[E0049]: method `bar` has 1 type parameter but its trait declaration has 0 type parameters - --> $DIR/generics-mismatch.rs:11:12 + --> $DIR/generics-mismatch.rs:14:12 | LL | fn bar(&self) -> impl Sized; | - expected 0 type parameters diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr b/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr new file mode 100644 index 000000000000..310edbcb6cd1 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr @@ -0,0 +1,12 @@ +error[E0049]: method `bar` has 1 type parameter but its trait declaration has 0 type parameters + --> $DIR/generics-mismatch.rs:14:12 + | +LL | fn bar(&self) -> impl Sized; + | - expected 0 type parameters +... +LL | fn bar(&self) {} + | ^ found 1 type parameter + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0049`. diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.rs b/tests/ui/impl-trait/in-trait/generics-mismatch.rs index cc0fc720ebbf..9259ca193d1d 100644 --- a/tests/ui/impl-trait/in-trait/generics-mismatch.rs +++ b/tests/ui/impl-trait/in-trait/generics-mismatch.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] From ae7fa1d269a3346372562570da3c51625027097b Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Thu, 16 Mar 2023 20:41:24 -0300 Subject: [PATCH 43/57] Add generic parameters mismatch test for async in traits --- .../ui/async-await/in-trait/generics-mismatch.rs | 15 +++++++++++++++ .../in-trait/generics-mismatch.stderr | 16 ++++++++++++++++ 2 files changed, 31 insertions(+) create mode 100644 tests/ui/async-await/in-trait/generics-mismatch.rs create mode 100644 tests/ui/async-await/in-trait/generics-mismatch.stderr diff --git a/tests/ui/async-await/in-trait/generics-mismatch.rs b/tests/ui/async-await/in-trait/generics-mismatch.rs new file mode 100644 index 000000000000..fc29783c0e32 --- /dev/null +++ b/tests/ui/async-await/in-trait/generics-mismatch.rs @@ -0,0 +1,15 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait Foo { + async fn foo(); +} + +impl Foo for () { + async fn foo() {} + //~^ ERROR: method `foo` has an incompatible generic parameter for trait `Foo` [E0053] +} + +fn main() {} diff --git a/tests/ui/async-await/in-trait/generics-mismatch.stderr b/tests/ui/async-await/in-trait/generics-mismatch.stderr new file mode 100644 index 000000000000..3518aa05cecc --- /dev/null +++ b/tests/ui/async-await/in-trait/generics-mismatch.stderr @@ -0,0 +1,16 @@ +error[E0053]: method `foo` has an incompatible generic parameter for trait `Foo` + --> $DIR/generics-mismatch.rs:11:18 + | +LL | trait Foo { + | --- +LL | async fn foo(); + | - expected type parameter +... +LL | impl Foo for () { + | --------------- +LL | async fn foo() {} + | ^^^^^^^^^^^^^^ found const parameter of type `usize` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0053`. From 7cce618d18c8203369d605d1ccedcfda09d58acc Mon Sep 17 00:00:00 2001 From: The 8472 Date: Mon, 6 Mar 2023 15:07:02 +0100 Subject: [PATCH 44/57] Fast path that skips over unchanged obligations in process_obligations - only borrow the refcell once per loop - avoid complex matches to reduce branch paths in the hot loop - use a by-ref fast path that avoids mutations at the expense of having false negatives --- Cargo.lock | 4 +-- compiler/rustc_data_structures/Cargo.toml | 2 +- .../src/obligation_forest/mod.rs | 19 +++++++++-- compiler/rustc_infer/src/infer/mod.rs | 32 +++++++++++++++++++ .../rustc_infer/src/infer/type_variable.rs | 5 +++ .../src/traits/fulfill.rs | 23 +++++++++++++ 6 files changed, 79 insertions(+), 6 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 49b89c71994a..1d40b8acc666 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1365,9 +1365,9 @@ dependencies = [ [[package]] name = "ena" -version = "0.14.1" +version = "0.14.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b2e5d13ca2353ab7d0230988629def93914a8c4015f621f9b13ed2955614731d" +checksum = "c533630cf40e9caa44bd91aadc88a75d75a4c3a12b4cfde353cbed41daa1e1f1" dependencies = [ "log", ] diff --git a/compiler/rustc_data_structures/Cargo.toml b/compiler/rustc_data_structures/Cargo.toml index 29cb2c0a33e6..f2a904a6654d 100644 --- a/compiler/rustc_data_structures/Cargo.toml +++ b/compiler/rustc_data_structures/Cargo.toml @@ -9,7 +9,7 @@ edition = "2021" arrayvec = { version = "0.7", default-features = false } bitflags = "1.2.1" cfg-if = "1.0" -ena = "0.14.1" +ena = "0.14.2" indexmap = { version = "1.9.1" } jobserver_crate = { version = "0.1.13", package = "jobserver" } libc = "0.2" diff --git a/compiler/rustc_data_structures/src/obligation_forest/mod.rs b/compiler/rustc_data_structures/src/obligation_forest/mod.rs index 91abdaadabdb..27a869eb7cdb 100644 --- a/compiler/rustc_data_structures/src/obligation_forest/mod.rs +++ b/compiler/rustc_data_structures/src/obligation_forest/mod.rs @@ -97,7 +97,17 @@ pub trait ObligationProcessor { type Error: Debug; type OUT: OutcomeTrait>; - fn needs_process_obligation(&self, obligation: &Self::Obligation) -> bool; + /// Implementations can provide a fast-path to obligation-processing + /// by counting the prefix of the passed iterator for which + /// `needs_process_obligation` would return false. + fn skippable_obligations<'a>( + &'a self, + _it: impl Iterator, + ) -> usize { + 0 + } + + fn needs_process_obligation(&self, _obligation: &Self::Obligation) -> bool; fn process_obligation( &mut self, @@ -416,6 +426,10 @@ impl ObligationForest { loop { let mut has_changed = false; + // This is the super fast path for cheap-to-check conditions. + let mut index = + processor.skippable_obligations(self.nodes.iter().map(|n| &n.obligation)); + // Note that the loop body can append new nodes, and those new nodes // will then be processed by subsequent iterations of the loop. // @@ -424,9 +438,8 @@ impl ObligationForest { // `for index in 0..self.nodes.len() { ... }` because the range would // be computed with the initial length, and we would miss the appended // nodes. Therefore we use a `while` loop. - let mut index = 0; while let Some(node) = self.nodes.get_mut(index) { - // This test is extremely hot. + // This is the moderately fast path when the prefix skipping above didn't work out. if node.state.get() != NodeState::Pending || !processor.needs_process_obligation(&node.obligation) { diff --git a/compiler/rustc_infer/src/infer/mod.rs b/compiler/rustc_infer/src/infer/mod.rs index 96e7c095d341..aeb4ddb42125 100644 --- a/compiler/rustc_infer/src/infer/mod.rs +++ b/compiler/rustc_infer/src/infer/mod.rs @@ -187,6 +187,16 @@ impl<'tcx> InferCtxtInner<'tcx> { self.projection_cache.with_log(&mut self.undo_log) } + #[inline] + fn try_type_variables_probe_ref( + &self, + vid: ty::TyVid, + ) -> Option<&type_variable::TypeVariableValue<'tcx>> { + // Uses a read-only view of the unification table, this way we don't + // need an undo log. + self.type_variable_storage.eq_relations_ref().try_probe_value(vid) + } + #[inline] fn type_variables(&mut self) -> type_variable::TypeVariableTable<'_, 'tcx> { self.type_variable_storage.with_log(&mut self.undo_log) @@ -1646,6 +1656,28 @@ impl<'tcx> InferCtxt<'tcx> { tcx.const_eval_resolve_for_typeck(param_env_erased, unevaluated, span) } + /// The returned function is used in a fast path. If it returns `true` the variable is + /// unchanged, `false` indicates that the status is unknown. + #[inline] + pub fn is_ty_infer_var_definitely_unchanged<'a>( + &'a self, + ) -> (impl Fn(TyOrConstInferVar<'tcx>) -> bool + 'a) { + // This hoists the borrow/release out of the loop body. + let inner = self.inner.try_borrow(); + + return move |infer_var: TyOrConstInferVar<'tcx>| match (infer_var, &inner) { + (TyOrConstInferVar::Ty(ty_var), Ok(inner)) => { + use self::type_variable::TypeVariableValue; + + match inner.try_type_variables_probe_ref(ty_var) { + Some(TypeVariableValue::Unknown { .. }) => true, + _ => false, + } + } + _ => false, + }; + } + /// `ty_or_const_infer_var_changed` is equivalent to one of these two: /// * `shallow_resolve(ty) != ty` (where `ty.kind = ty::Infer(_)`) /// * `shallow_resolve(ct) != ct` (where `ct.kind = ty::ConstKind::Infer(_)`) diff --git a/compiler/rustc_infer/src/infer/type_variable.rs b/compiler/rustc_infer/src/infer/type_variable.rs index 263c6a47dd2a..f7ab05b2d498 100644 --- a/compiler/rustc_infer/src/infer/type_variable.rs +++ b/compiler/rustc_infer/src/infer/type_variable.rs @@ -190,6 +190,11 @@ impl<'tcx> TypeVariableStorage<'tcx> { ) -> TypeVariableTable<'a, 'tcx> { TypeVariableTable { storage: self, undo_log } } + + #[inline] + pub(crate) fn eq_relations_ref(&self) -> &ut::UnificationTableStorage> { + &self.eq_relations + } } impl<'tcx> TypeVariableTable<'_, 'tcx> { diff --git a/compiler/rustc_trait_selection/src/traits/fulfill.rs b/compiler/rustc_trait_selection/src/traits/fulfill.rs index 1aaadae12ddd..23754480fcfb 100644 --- a/compiler/rustc_trait_selection/src/traits/fulfill.rs +++ b/compiler/rustc_trait_selection/src/traits/fulfill.rs @@ -211,6 +211,29 @@ impl<'a, 'tcx> ObligationProcessor for FulfillProcessor<'a, 'tcx> { type Error = FulfillmentErrorCode<'tcx>; type OUT = Outcome; + /// Compared to `needs_process_obligation` this and its callees + /// contain some optimizations that come at the price of false negatives. + /// + /// They + /// - reduce branching by covering only the most common case + /// - take a read-only view of the unification tables which allows skipping undo_log + /// construction. + /// - bail out on value-cache misses in ena to avoid pointer chasing + /// - hoist RefCell locking out of the loop + #[inline] + fn skippable_obligations<'b>( + &'b self, + it: impl Iterator, + ) -> usize { + let is_unchanged = self.selcx.infcx.is_ty_infer_var_definitely_unchanged(); + + it.take_while(|o| match o.stalled_on.as_slice() { + [o] => is_unchanged(*o), + _ => false, + }) + .count() + } + /// Identifies whether a predicate obligation needs processing. /// /// This is always inlined because it has a single callsite and it is From e0302bbc3bbecd172447f1105f586be3c35e043b Mon Sep 17 00:00:00 2001 From: Santiago Pastorino Date: Thu, 16 Mar 2023 16:29:01 -0300 Subject: [PATCH 45/57] Add revisions for -Zlower-impl-trait-in-trait-to-assoc-ty fixed tests --- .../async-await/async-trait-fn.current.stderr | 42 ++++++++ .../ui/async-await/async-trait-fn.next.stderr | 42 ++++++++ tests/ui/async-await/async-trait-fn.rs | 1 + tests/ui/async-await/async-trait-fn.stderr | 6 +- ...dition-deny-async-fns-2015.current.stderr} | 20 ++-- .../edition-deny-async-fns-2015.next.stderr | 98 +++++++++++++++++++ .../edition-deny-async-fns-2015.rs | 2 + .../in-trait/generics-mismatch.current.stderr | 16 +++ .../in-trait/generics-mismatch.next.stderr | 16 +++ .../async-await/in-trait/generics-mismatch.rs | 15 +++ .../in-trait/generics-mismatch.stderr | 16 +++ ... => return-type-suggestion.current.stderr} | 4 +- .../return-type-suggestion.next.stderr | 23 +++++ .../in-trait/return-type-suggestion.rs | 2 + ... => default-body-with-rpit.current.stderr} | 6 +- .../default-body-with-rpit.next.stderr | 24 +++++ .../in-trait/default-body-with-rpit.rs | 2 + ...y.stderr => doesnt-satisfy.current.stderr} | 4 +- .../in-trait/doesnt-satisfy.next.stderr | 17 ++++ .../ui/impl-trait/in-trait/doesnt-satisfy.rs | 3 + 20 files changed, 339 insertions(+), 20 deletions(-) create mode 100644 tests/ui/async-await/async-trait-fn.current.stderr create mode 100644 tests/ui/async-await/async-trait-fn.next.stderr rename tests/ui/async-await/{edition-deny-async-fns-2015.stderr => edition-deny-async-fns-2015.current.stderr} (87%) create mode 100644 tests/ui/async-await/edition-deny-async-fns-2015.next.stderr create mode 100644 tests/ui/async-await/in-trait/generics-mismatch.current.stderr create mode 100644 tests/ui/async-await/in-trait/generics-mismatch.next.stderr create mode 100644 tests/ui/async-await/in-trait/generics-mismatch.rs create mode 100644 tests/ui/async-await/in-trait/generics-mismatch.stderr rename tests/ui/async-await/in-trait/{return-type-suggestion.stderr => return-type-suggestion.current.stderr} (89%) create mode 100644 tests/ui/async-await/in-trait/return-type-suggestion.next.stderr rename tests/ui/impl-trait/in-trait/{default-body-with-rpit.stderr => default-body-with-rpit.current.stderr} (82%) create mode 100644 tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr rename tests/ui/impl-trait/in-trait/{doesnt-satisfy.stderr => doesnt-satisfy.current.stderr} (90%) create mode 100644 tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr diff --git a/tests/ui/async-await/async-trait-fn.current.stderr b/tests/ui/async-await/async-trait-fn.current.stderr new file mode 100644 index 000000000000..7ccf2f2301d2 --- /dev/null +++ b/tests/ui/async-await/async-trait-fn.current.stderr @@ -0,0 +1,42 @@ +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/async-trait-fn.rs:6:5 + | +LL | async fn foo() {} + | -----^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/async-trait-fn.rs:7:5 + | +LL | async fn bar(&self) {} + | -----^^^^^^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/async-trait-fn.rs:8:5 + | +LL | async fn baz() { + | -----^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0706`. diff --git a/tests/ui/async-await/async-trait-fn.next.stderr b/tests/ui/async-await/async-trait-fn.next.stderr new file mode 100644 index 000000000000..7ccf2f2301d2 --- /dev/null +++ b/tests/ui/async-await/async-trait-fn.next.stderr @@ -0,0 +1,42 @@ +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/async-trait-fn.rs:6:5 + | +LL | async fn foo() {} + | -----^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/async-trait-fn.rs:7:5 + | +LL | async fn bar(&self) {} + | -----^^^^^^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/async-trait-fn.rs:8:5 + | +LL | async fn baz() { + | -----^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0706`. diff --git a/tests/ui/async-await/async-trait-fn.rs b/tests/ui/async-await/async-trait-fn.rs index e2062e82725c..04123badb538 100644 --- a/tests/ui/async-await/async-trait-fn.rs +++ b/tests/ui/async-await/async-trait-fn.rs @@ -1,4 +1,5 @@ // edition:2018 + trait T { async fn foo() {} //~ ERROR functions in traits cannot be declared `async` async fn bar(&self) {} //~ ERROR functions in traits cannot be declared `async` diff --git a/tests/ui/async-await/async-trait-fn.stderr b/tests/ui/async-await/async-trait-fn.stderr index afbe25cf7ab7..68ebe3507ac3 100644 --- a/tests/ui/async-await/async-trait-fn.stderr +++ b/tests/ui/async-await/async-trait-fn.stderr @@ -1,5 +1,5 @@ error[E0706]: functions in traits cannot be declared `async` - --> $DIR/async-trait-fn.rs:3:5 + --> $DIR/async-trait-fn.rs:4:5 | LL | async fn foo() {} | -----^^^^^^^^^ @@ -12,7 +12,7 @@ LL | async fn foo() {} = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable error[E0706]: functions in traits cannot be declared `async` - --> $DIR/async-trait-fn.rs:4:5 + --> $DIR/async-trait-fn.rs:5:5 | LL | async fn bar(&self) {} | -----^^^^^^^^^^^^^^ @@ -25,7 +25,7 @@ LL | async fn bar(&self) {} = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable error[E0706]: functions in traits cannot be declared `async` - --> $DIR/async-trait-fn.rs:5:5 + --> $DIR/async-trait-fn.rs:6:5 | LL | async fn baz() { | -----^^^^^^^^^ diff --git a/tests/ui/async-await/edition-deny-async-fns-2015.stderr b/tests/ui/async-await/edition-deny-async-fns-2015.current.stderr similarity index 87% rename from tests/ui/async-await/edition-deny-async-fns-2015.stderr rename to tests/ui/async-await/edition-deny-async-fns-2015.current.stderr index ba918eb28def..c47b99e657e1 100644 --- a/tests/ui/async-await/edition-deny-async-fns-2015.stderr +++ b/tests/ui/async-await/edition-deny-async-fns-2015.current.stderr @@ -1,5 +1,5 @@ error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:3:1 + --> $DIR/edition-deny-async-fns-2015.rs:5:1 | LL | async fn foo() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -8,7 +8,7 @@ LL | async fn foo() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:5:12 + --> $DIR/edition-deny-async-fns-2015.rs:7:12 | LL | fn baz() { async fn foo() {} } | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -17,7 +17,7 @@ LL | fn baz() { async fn foo() {} } = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:7:1 + --> $DIR/edition-deny-async-fns-2015.rs:9:1 | LL | async fn async_baz() { | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -26,7 +26,7 @@ LL | async fn async_baz() { = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:8:5 + --> $DIR/edition-deny-async-fns-2015.rs:10:5 | LL | async fn bar() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -35,7 +35,7 @@ LL | async fn bar() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:14:5 + --> $DIR/edition-deny-async-fns-2015.rs:16:5 | LL | async fn foo() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -44,7 +44,7 @@ LL | async fn foo() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:18:5 + --> $DIR/edition-deny-async-fns-2015.rs:20:5 | LL | async fn foo() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -53,7 +53,7 @@ LL | async fn foo() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:36:9 + --> $DIR/edition-deny-async-fns-2015.rs:38:9 | LL | async fn bar() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -62,7 +62,7 @@ LL | async fn bar() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:26:9 + --> $DIR/edition-deny-async-fns-2015.rs:28:9 | LL | async fn foo() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -71,7 +71,7 @@ LL | async fn foo() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0670]: `async fn` is not permitted in Rust 2015 - --> $DIR/edition-deny-async-fns-2015.rs:31:13 + --> $DIR/edition-deny-async-fns-2015.rs:33:13 | LL | async fn bar() {} | ^^^^^ to use `async fn`, switch to Rust 2018 or later @@ -80,7 +80,7 @@ LL | async fn bar() {} = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0706]: functions in traits cannot be declared `async` - --> $DIR/edition-deny-async-fns-2015.rs:18:5 + --> $DIR/edition-deny-async-fns-2015.rs:20:5 | LL | async fn foo() {} | -----^^^^^^^^^ diff --git a/tests/ui/async-await/edition-deny-async-fns-2015.next.stderr b/tests/ui/async-await/edition-deny-async-fns-2015.next.stderr new file mode 100644 index 000000000000..c47b99e657e1 --- /dev/null +++ b/tests/ui/async-await/edition-deny-async-fns-2015.next.stderr @@ -0,0 +1,98 @@ +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:5:1 + | +LL | async fn foo() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:7:12 + | +LL | fn baz() { async fn foo() {} } + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:9:1 + | +LL | async fn async_baz() { + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:10:5 + | +LL | async fn bar() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:16:5 + | +LL | async fn foo() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:20:5 + | +LL | async fn foo() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:38:9 + | +LL | async fn bar() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:28:9 + | +LL | async fn foo() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0670]: `async fn` is not permitted in Rust 2015 + --> $DIR/edition-deny-async-fns-2015.rs:33:13 + | +LL | async fn bar() {} + | ^^^^^ to use `async fn`, switch to Rust 2018 or later + | + = help: pass `--edition 2021` to `rustc` + = note: for more on editions, read https://doc.rust-lang.org/edition-guide + +error[E0706]: functions in traits cannot be declared `async` + --> $DIR/edition-deny-async-fns-2015.rs:20:5 + | +LL | async fn foo() {} + | -----^^^^^^^^^ + | | + | `async` because of this + | + = note: `async` trait functions are not currently supported + = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait + = note: see issue #91611 for more information + = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable + +error: aborting due to 10 previous errors + +Some errors have detailed explanations: E0670, E0706. +For more information about an error, try `rustc --explain E0670`. diff --git a/tests/ui/async-await/edition-deny-async-fns-2015.rs b/tests/ui/async-await/edition-deny-async-fns-2015.rs index 6bd6d879a4ac..d4c30dc9d828 100644 --- a/tests/ui/async-await/edition-deny-async-fns-2015.rs +++ b/tests/ui/async-await/edition-deny-async-fns-2015.rs @@ -1,4 +1,6 @@ // edition:2015 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next async fn foo() {} //~ ERROR `async fn` is not permitted in Rust 2015 diff --git a/tests/ui/async-await/in-trait/generics-mismatch.current.stderr b/tests/ui/async-await/in-trait/generics-mismatch.current.stderr new file mode 100644 index 000000000000..be23384e049d --- /dev/null +++ b/tests/ui/async-await/in-trait/generics-mismatch.current.stderr @@ -0,0 +1,16 @@ +error[E0053]: method `foo` has an incompatible generic parameter for trait `Foo` + --> $DIR/generics-mismatch.rs:13:18 + | +LL | trait Foo { + | --- +LL | async fn foo(); + | - expected type parameter +... +LL | impl Foo for () { + | --------------- +LL | async fn foo() {} + | ^^^^^^^^^^^^^^ found const parameter of type `usize` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/async-await/in-trait/generics-mismatch.next.stderr b/tests/ui/async-await/in-trait/generics-mismatch.next.stderr new file mode 100644 index 000000000000..be23384e049d --- /dev/null +++ b/tests/ui/async-await/in-trait/generics-mismatch.next.stderr @@ -0,0 +1,16 @@ +error[E0053]: method `foo` has an incompatible generic parameter for trait `Foo` + --> $DIR/generics-mismatch.rs:13:18 + | +LL | trait Foo { + | --- +LL | async fn foo(); + | - expected type parameter +... +LL | impl Foo for () { + | --------------- +LL | async fn foo() {} + | ^^^^^^^^^^^^^^ found const parameter of type `usize` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/async-await/in-trait/generics-mismatch.rs b/tests/ui/async-await/in-trait/generics-mismatch.rs new file mode 100644 index 000000000000..fc29783c0e32 --- /dev/null +++ b/tests/ui/async-await/in-trait/generics-mismatch.rs @@ -0,0 +1,15 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait Foo { + async fn foo(); +} + +impl Foo for () { + async fn foo() {} + //~^ ERROR: method `foo` has an incompatible generic parameter for trait `Foo` [E0053] +} + +fn main() {} diff --git a/tests/ui/async-await/in-trait/generics-mismatch.stderr b/tests/ui/async-await/in-trait/generics-mismatch.stderr new file mode 100644 index 000000000000..3518aa05cecc --- /dev/null +++ b/tests/ui/async-await/in-trait/generics-mismatch.stderr @@ -0,0 +1,16 @@ +error[E0053]: method `foo` has an incompatible generic parameter for trait `Foo` + --> $DIR/generics-mismatch.rs:11:18 + | +LL | trait Foo { + | --- +LL | async fn foo(); + | - expected type parameter +... +LL | impl Foo for () { + | --------------- +LL | async fn foo() {} + | ^^^^^^^^^^^^^^ found const parameter of type `usize` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/async-await/in-trait/return-type-suggestion.stderr b/tests/ui/async-await/in-trait/return-type-suggestion.current.stderr similarity index 89% rename from tests/ui/async-await/in-trait/return-type-suggestion.stderr rename to tests/ui/async-await/in-trait/return-type-suggestion.current.stderr index b8d83d0f28a3..a5efc7571565 100644 --- a/tests/ui/async-await/in-trait/return-type-suggestion.stderr +++ b/tests/ui/async-await/in-trait/return-type-suggestion.current.stderr @@ -1,5 +1,5 @@ warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/return-type-suggestion.rs:3:12 + --> $DIR/return-type-suggestion.rs:5:12 | LL | #![feature(async_fn_in_trait)] | ^^^^^^^^^^^^^^^^^ @@ -8,7 +8,7 @@ LL | #![feature(async_fn_in_trait)] = note: `#[warn(incomplete_features)]` on by default error[E0308]: mismatched types - --> $DIR/return-type-suggestion.rs:8:9 + --> $DIR/return-type-suggestion.rs:10:9 | LL | Ok(()) | ^^^^^^- help: consider using a semicolon here: `;` diff --git a/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr b/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr new file mode 100644 index 000000000000..a5efc7571565 --- /dev/null +++ b/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr @@ -0,0 +1,23 @@ +warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/return-type-suggestion.rs:5:12 + | +LL | #![feature(async_fn_in_trait)] + | ^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0308]: mismatched types + --> $DIR/return-type-suggestion.rs:10:9 + | +LL | Ok(()) + | ^^^^^^- help: consider using a semicolon here: `;` + | | + | expected `()`, found `Result<(), _>` + | + = note: expected unit type `()` + found enum `Result<(), _>` + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/async-await/in-trait/return-type-suggestion.rs b/tests/ui/async-await/in-trait/return-type-suggestion.rs index 3446761d119d..3de66306d9ab 100644 --- a/tests/ui/async-await/in-trait/return-type-suggestion.rs +++ b/tests/ui/async-await/in-trait/return-type-suggestion.rs @@ -1,4 +1,6 @@ // edition: 2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait)] //~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes diff --git a/tests/ui/impl-trait/in-trait/default-body-with-rpit.stderr b/tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr similarity index 82% rename from tests/ui/impl-trait/in-trait/default-body-with-rpit.stderr rename to tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr index b5fc9d44d368..3c24eff9ae30 100644 --- a/tests/ui/impl-trait/in-trait/default-body-with-rpit.stderr +++ b/tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr @@ -1,11 +1,11 @@ error: concrete type differs from previous defining opaque type use - --> $DIR/default-body-with-rpit.rs:11:9 + --> $DIR/default-body-with-rpit.rs:13:9 | LL | "" | ^^ expected `impl Debug`, got `&'static str` | note: previous use here - --> $DIR/default-body-with-rpit.rs:10:39 + --> $DIR/default-body-with-rpit.rs:12:39 | LL | async fn baz(&self) -> impl Debug { | _______________________________________^ @@ -14,7 +14,7 @@ LL | | } | |_____^ error[E0720]: cannot resolve opaque type - --> $DIR/default-body-with-rpit.rs:10:28 + --> $DIR/default-body-with-rpit.rs:12:28 | LL | async fn baz(&self) -> impl Debug { | ^^^^^^^^^^ cannot resolve opaque type diff --git a/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr b/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr new file mode 100644 index 000000000000..3c24eff9ae30 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr @@ -0,0 +1,24 @@ +error: concrete type differs from previous defining opaque type use + --> $DIR/default-body-with-rpit.rs:13:9 + | +LL | "" + | ^^ expected `impl Debug`, got `&'static str` + | +note: previous use here + --> $DIR/default-body-with-rpit.rs:12:39 + | +LL | async fn baz(&self) -> impl Debug { + | _______________________________________^ +LL | | "" +LL | | } + | |_____^ + +error[E0720]: cannot resolve opaque type + --> $DIR/default-body-with-rpit.rs:12:28 + | +LL | async fn baz(&self) -> impl Debug { + | ^^^^^^^^^^ cannot resolve opaque type + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0720`. diff --git a/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs b/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs index 0558d95128f4..6bcc7b9ef95f 100644 --- a/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs +++ b/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs @@ -1,5 +1,7 @@ // edition:2021 // known-bug: #108304 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait, return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.stderr b/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr similarity index 90% rename from tests/ui/impl-trait/in-trait/doesnt-satisfy.stderr rename to tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr index aa5492d285ed..653016cf009a 100644 --- a/tests/ui/impl-trait/in-trait/doesnt-satisfy.stderr +++ b/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr @@ -1,5 +1,5 @@ error[E0277]: `()` doesn't implement `std::fmt::Display` - --> $DIR/doesnt-satisfy.rs:9:17 + --> $DIR/doesnt-satisfy.rs:12:17 | LL | fn bar() -> () {} | ^^ `()` cannot be formatted with the default formatter @@ -7,7 +7,7 @@ LL | fn bar() -> () {} = help: the trait `std::fmt::Display` is not implemented for `()` = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead note: required by a bound in `Foo::bar::{opaque#0}` - --> $DIR/doesnt-satisfy.rs:5:22 + --> $DIR/doesnt-satisfy.rs:8:22 | LL | fn bar() -> impl std::fmt::Display; | ^^^^^^^^^^^^^^^^^ required by this bound in `Foo::bar::{opaque#0}` diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr b/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr new file mode 100644 index 000000000000..bbfa089ceef9 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr @@ -0,0 +1,17 @@ +error[E0277]: `()` doesn't implement `std::fmt::Display` + --> $DIR/doesnt-satisfy.rs:12:17 + | +LL | fn bar() -> () {} + | ^^ `()` cannot be formatted with the default formatter + | + = help: the trait `std::fmt::Display` is not implemented for `()` + = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead +note: required by a bound in `Foo::{opaque#0}` + --> $DIR/doesnt-satisfy.rs:8:22 + | +LL | fn bar() -> impl std::fmt::Display; + | ^^^^^^^^^^^^^^^^^ required by this bound in `Foo::` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs b/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs index bb4e0d44f3ef..fcd0b51eea4f 100644 --- a/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs +++ b/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] From 8628e27da34f8b64ce4a02a6f2e74a6c4016612f Mon Sep 17 00:00:00 2001 From: Michael Howell Date: Fri, 17 Mar 2023 15:29:47 -0700 Subject: [PATCH 46/57] rustdoc: reduce allocations in `visibility_to_src_with_space` --- src/librustdoc/html/format.rs | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/src/librustdoc/html/format.rs b/src/librustdoc/html/format.rs index 27010b771d33..d526a8be0811 100644 --- a/src/librustdoc/html/format.rs +++ b/src/librustdoc/html/format.rs @@ -1502,9 +1502,9 @@ pub(crate) fn visibility_to_src_with_space<'a, 'tcx: 'a>( tcx: TyCtxt<'tcx>, item_did: DefId, ) -> impl fmt::Display + 'a + Captures<'tcx> { - let to_print = match visibility { - None => String::new(), - Some(ty::Visibility::Public) => "pub ".to_owned(), + let to_print: Cow<'static, str> = match visibility { + None => "".into(), + Some(ty::Visibility::Public) => "pub ".into(), Some(ty::Visibility::Restricted(vis_did)) => { // FIXME(camelid): This may not work correctly if `item_did` is a module. // However, rustdoc currently never displays a module's @@ -1512,17 +1512,17 @@ pub(crate) fn visibility_to_src_with_space<'a, 'tcx: 'a>( let parent_module = find_nearest_parent_module(tcx, item_did); if vis_did.is_crate_root() { - "pub(crate) ".to_owned() + "pub(crate) ".into() } else if parent_module == Some(vis_did) { // `pub(in foo)` where `foo` is the parent module // is the same as no visibility modifier - String::new() + "".into() } else if parent_module.and_then(|parent| find_nearest_parent_module(tcx, parent)) == Some(vis_did) { - "pub(super) ".to_owned() + "pub(super) ".into() } else { - format!("pub(in {}) ", tcx.def_path_str(vis_did)) + format!("pub(in {}) ", tcx.def_path_str(vis_did)).into() } } }; From 35088797aec481a9549d5d495b27ce9f1e3a39dd Mon Sep 17 00:00:00 2001 From: Scott McMurray Date: Fri, 17 Mar 2023 19:29:23 -0700 Subject: [PATCH 47/57] Use `size_of_val` instead of manual calculation Very minor thing that I happened to notice in passing, but it's both shorter and means it gets `mul nuw`, so why not. --- compiler/rustc_codegen_ssa/src/glue.rs | 2 +- library/core/src/hash/mod.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/compiler/rustc_codegen_ssa/src/glue.rs b/compiler/rustc_codegen_ssa/src/glue.rs index 0f6e6032f9bf..c34f1dbf8569 100644 --- a/compiler/rustc_codegen_ssa/src/glue.rs +++ b/compiler/rustc_codegen_ssa/src/glue.rs @@ -46,7 +46,7 @@ pub fn size_and_align_of_dst<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>( // NOTE: ideally, we want the effects of both `unchecked_smul` and `unchecked_umul` // (resulting in `mul nsw nuw` in LLVM IR), since we know that the multiplication // cannot signed wrap, and that both operands are non-negative. But at the time of writing, - // `BuilderMethods` can't do this, and it doesn't seem to enable any further optimizations. + // the `LLVM-C` binding can't do this, and it doesn't seem to enable any further optimizations. bx.unchecked_smul(info.unwrap(), bx.const_usize(unit.size.bytes())), bx.const_usize(unit.align.abi.bytes()), ) diff --git a/library/core/src/hash/mod.rs b/library/core/src/hash/mod.rs index 71a0d1825efe..540831c82533 100644 --- a/library/core/src/hash/mod.rs +++ b/library/core/src/hash/mod.rs @@ -834,7 +834,7 @@ mod impls { #[inline] fn hash_slice(data: &[$ty], state: &mut H) { - let newlen = data.len() * mem::size_of::<$ty>(); + let newlen = mem::size_of_val(data); let ptr = data.as_ptr() as *const u8; // SAFETY: `ptr` is valid and aligned, as this macro is only used // for numeric primitives which have no padding. The new slice only From a3f3db842df11849d7060eaa8c2b50d3e49bed03 Mon Sep 17 00:00:00 2001 From: John Millikin Date: Sat, 18 Mar 2023 12:22:53 +0900 Subject: [PATCH 48/57] Stabilise `unix_socket_abstract` Fixes https://github.com/rust-lang/rust/issues/85410 --- library/std/src/os/android/net.rs | 4 ++-- library/std/src/os/linux/net.rs | 4 ++-- library/std/src/os/net/linux_ext/addr.rs | 6 +++--- library/std/src/os/net/linux_ext/mod.rs | 2 +- library/std/src/os/unix/net/addr.rs | 4 ++-- library/std/src/os/unix/net/datagram.rs | 9 +++------ library/std/src/os/unix/net/listener.rs | 3 +-- library/std/src/os/unix/net/stream.rs | 3 +-- 8 files changed, 15 insertions(+), 20 deletions(-) diff --git a/library/std/src/os/android/net.rs b/library/std/src/os/android/net.rs index 7cecd1bbfaa9..4e88ab8ff5c5 100644 --- a/library/std/src/os/android/net.rs +++ b/library/std/src/os/android/net.rs @@ -1,8 +1,8 @@ //! Android-specific networking functionality. -#![unstable(feature = "tcp_quickack", issue = "96256")] +#![stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] -#[unstable(feature = "unix_socket_abstract", issue = "85410")] +#[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub use crate::os::net::linux_ext::addr::SocketAddrExt; #[unstable(feature = "tcp_quickack", issue = "96256")] diff --git a/library/std/src/os/linux/net.rs b/library/std/src/os/linux/net.rs index 94081c8dd31c..fcb3bb834855 100644 --- a/library/std/src/os/linux/net.rs +++ b/library/std/src/os/linux/net.rs @@ -1,8 +1,8 @@ //! Linux-specific networking functionality. -#![unstable(feature = "tcp_quickack", issue = "96256")] +#![stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] -#[unstable(feature = "unix_socket_abstract", issue = "85410")] +#[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub use crate::os::net::linux_ext::addr::SocketAddrExt; #[unstable(feature = "tcp_quickack", issue = "96256")] diff --git a/library/std/src/os/net/linux_ext/addr.rs b/library/std/src/os/net/linux_ext/addr.rs index 85065984fbbb..ea8102c9cc0a 100644 --- a/library/std/src/os/net/linux_ext/addr.rs +++ b/library/std/src/os/net/linux_ext/addr.rs @@ -4,7 +4,7 @@ use crate::os::unix::net::SocketAddr; use crate::sealed::Sealed; /// Platform-specific extensions to [`SocketAddr`]. -#[unstable(feature = "unix_socket_abstract", issue = "85410")] +#[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub trait SocketAddrExt: Sealed { /// Creates a Unix socket address in the abstract namespace. /// @@ -22,7 +22,6 @@ pub trait SocketAddrExt: Sealed { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixListener, SocketAddr}; /// use std::os::linux::net::SocketAddrExt; /// @@ -38,6 +37,7 @@ pub trait SocketAddrExt: Sealed { /// Ok(()) /// } /// ``` + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] fn from_abstract_name(name: N) -> crate::io::Result where N: AsRef<[u8]>; @@ -47,7 +47,6 @@ pub trait SocketAddrExt: Sealed { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixListener, SocketAddr}; /// use std::os::linux::net::SocketAddrExt; /// @@ -60,5 +59,6 @@ pub trait SocketAddrExt: Sealed { /// Ok(()) /// } /// ``` + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] fn as_abstract_name(&self) -> Option<&[u8]>; } diff --git a/library/std/src/os/net/linux_ext/mod.rs b/library/std/src/os/net/linux_ext/mod.rs index 318ebacfd7a0..e7423dce6135 100644 --- a/library/std/src/os/net/linux_ext/mod.rs +++ b/library/std/src/os/net/linux_ext/mod.rs @@ -2,7 +2,7 @@ #![doc(cfg(any(target_os = "linux", target_os = "android")))] -#[unstable(feature = "unix_socket_abstract", issue = "85410")] +#[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub(crate) mod addr; #[unstable(feature = "tcp_quickack", issue = "96256")] diff --git a/library/std/src/os/unix/net/addr.rs b/library/std/src/os/unix/net/addr.rs index ece2b33bddf3..52a0da5bf1a6 100644 --- a/library/std/src/os/unix/net/addr.rs +++ b/library/std/src/os/unix/net/addr.rs @@ -245,12 +245,12 @@ impl SocketAddr { } } -#[unstable(feature = "unix_socket_abstract", issue = "85410")] +#[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] impl Sealed for SocketAddr {} #[doc(cfg(any(target_os = "android", target_os = "linux")))] #[cfg(any(doc, target_os = "android", target_os = "linux"))] -#[unstable(feature = "unix_socket_abstract", issue = "85410")] +#[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] impl linux_ext::addr::SocketAddrExt for SocketAddr { fn as_abstract_name(&self) -> Option<&[u8]> { if let AddressKind::Abstract(name) = self.address() { Some(name) } else { None } diff --git a/library/std/src/os/unix/net/datagram.rs b/library/std/src/os/unix/net/datagram.rs index 272b4f5dcd5a..e64569758a04 100644 --- a/library/std/src/os/unix/net/datagram.rs +++ b/library/std/src/os/unix/net/datagram.rs @@ -102,7 +102,6 @@ impl UnixDatagram { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixDatagram}; /// /// fn main() -> std::io::Result<()> { @@ -119,7 +118,7 @@ impl UnixDatagram { /// Ok(()) /// } /// ``` - #[unstable(feature = "unix_socket_abstract", issue = "85410")] + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub fn bind_addr(socket_addr: &SocketAddr) -> io::Result { unsafe { let socket = UnixDatagram::unbound()?; @@ -217,7 +216,6 @@ impl UnixDatagram { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixDatagram}; /// /// fn main() -> std::io::Result<()> { @@ -235,7 +233,7 @@ impl UnixDatagram { /// Ok(()) /// } /// ``` - #[unstable(feature = "unix_socket_abstract", issue = "85410")] + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub fn connect_addr(&self, socket_addr: &SocketAddr) -> io::Result<()> { unsafe { cvt(libc::connect( @@ -523,7 +521,6 @@ impl UnixDatagram { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixDatagram}; /// /// fn main() -> std::io::Result<()> { @@ -535,7 +532,7 @@ impl UnixDatagram { /// Ok(()) /// } /// ``` - #[unstable(feature = "unix_socket_abstract", issue = "85410")] + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub fn send_to_addr(&self, buf: &[u8], socket_addr: &SocketAddr) -> io::Result { unsafe { let count = cvt(libc::sendto( diff --git a/library/std/src/os/unix/net/listener.rs b/library/std/src/os/unix/net/listener.rs index 02090afc82f7..83f0debe6765 100644 --- a/library/std/src/os/unix/net/listener.rs +++ b/library/std/src/os/unix/net/listener.rs @@ -90,7 +90,6 @@ impl UnixListener { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixListener}; /// /// fn main() -> std::io::Result<()> { @@ -107,7 +106,7 @@ impl UnixListener { /// Ok(()) /// } /// ``` - #[unstable(feature = "unix_socket_abstract", issue = "85410")] + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub fn bind_addr(socket_addr: &SocketAddr) -> io::Result { unsafe { let inner = Socket::new_raw(libc::AF_UNIX, libc::SOCK_STREAM)?; diff --git a/library/std/src/os/unix/net/stream.rs b/library/std/src/os/unix/net/stream.rs index dff8f6e85675..65cb4ae07a50 100644 --- a/library/std/src/os/unix/net/stream.rs +++ b/library/std/src/os/unix/net/stream.rs @@ -106,7 +106,6 @@ impl UnixStream { /// # Examples /// /// ```no_run - /// #![feature(unix_socket_abstract)] /// use std::os::unix::net::{UnixListener, UnixStream}; /// /// fn main() -> std::io::Result<()> { @@ -123,7 +122,7 @@ impl UnixStream { /// Ok(()) /// } /// ```` - #[unstable(feature = "unix_socket_abstract", issue = "85410")] + #[stable(feature = "unix_socket_abstract", since = "CURRENT_RUSTC_VERSION")] pub fn connect_addr(socket_addr: &SocketAddr) -> io::Result { unsafe { let inner = Socket::new_raw(libc::AF_UNIX, libc::SOCK_STREAM)?; From c76e260fa7b8318216dac0f78fe008ce1e0f8684 Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Sun, 5 Mar 2023 07:21:41 -0600 Subject: [PATCH 49/57] Use named threads in tidy This makes it easier to profile. --- src/tools/tidy/src/main.rs | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/src/tools/tidy/src/main.rs b/src/tools/tidy/src/main.rs index d98758ace4fc..ced1c0240152 100644 --- a/src/tools/tidy/src/main.rs +++ b/src/tools/tidy/src/main.rs @@ -13,7 +13,7 @@ use std::path::PathBuf; use std::process; use std::str::FromStr; use std::sync::atomic::{AtomicBool, Ordering}; -use std::thread::{scope, ScopedJoinHandle}; +use std::thread::{self, scope, ScopedJoinHandle}; fn main() { let root_path: PathBuf = env::args_os().nth(1).expect("need path to root of repo").into(); @@ -55,16 +55,28 @@ fn main() { VecDeque::with_capacity(concurrency.get()); macro_rules! check { - ($p:ident $(, $args:expr)* ) => { + ($p:ident) => { + check!(@ $p, name=format!("{}", stringify!($p))); + }; + ($p:ident, $path:expr $(, $args:expr)* ) => { + let shortened = $path.strip_prefix(&root_path).unwrap(); + let name = if shortened == std::path::Path::new("") { + format!("{} (.)", stringify!($p)) + } else { + format!("{} ({})", stringify!($p), shortened.display()) + }; + check!(@ $p, name=name, $path $(,$args)*); + }; + (@ $p:ident, name=$name:expr $(, $args:expr)* ) => { drain_handles(&mut handles); - let handle = s.spawn(|| { + let handle = thread::Builder::new().name($name).spawn_scoped(s, || { let mut flag = false; $p::check($($args, )* &mut flag); if (flag) { bad.store(true, Ordering::Relaxed); } - }); + }).unwrap(); handles.push_back(handle); } } From 9b606a3203da5141f4922ef405ef0d1b9bf0b8bf Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Sun, 5 Mar 2023 06:45:07 -0600 Subject: [PATCH 50/57] Speed up file walking in tidy - Skip files in `skip` wherever possible to avoid reading their contents - Don't look for `tidy-alphabetic-start` in tests. It's never currently used and slows the check down a lot. - Add new `filter_not_rust` helper function --- src/tools/tidy/src/debug_artifacts.rs | 12 +-- src/tools/tidy/src/features.rs | 17 ++-- src/tools/tidy/src/main.rs | 1 - src/tools/tidy/src/style.rs | 26 ++--- src/tools/tidy/src/target_specific_tests.rs | 100 ++++++++++---------- src/tools/tidy/src/walk.rs | 7 +- 6 files changed, 80 insertions(+), 83 deletions(-) diff --git a/src/tools/tidy/src/debug_artifacts.rs b/src/tools/tidy/src/debug_artifacts.rs index 2241375eaae1..84b133068055 100644 --- a/src/tools/tidy/src/debug_artifacts.rs +++ b/src/tools/tidy/src/debug_artifacts.rs @@ -1,21 +1,15 @@ //! Tidy check to prevent creation of unnecessary debug artifacts while running tests. -use crate::walk::{filter_dirs, walk}; +use crate::walk::{filter_dirs, filter_not_rust, walk}; use std::path::Path; const GRAPHVIZ_POSTFLOW_MSG: &str = "`borrowck_graphviz_postflow` attribute in test"; pub fn check(test_dir: &Path, bad: &mut bool) { - walk(test_dir, filter_dirs, &mut |entry, contents| { - let filename = entry.path(); - let is_rust = filename.extension().map_or(false, |ext| ext == "rs"); - if !is_rust { - return; - } - + walk(test_dir, |path| filter_dirs(path) || filter_not_rust(path), &mut |entry, contents| { for (i, line) in contents.lines().enumerate() { if line.contains("borrowck_graphviz_postflow") { - tidy_error!(bad, "{}:{}: {}", filename.display(), i + 1, GRAPHVIZ_POSTFLOW_MSG); + tidy_error!(bad, "{}:{}: {}", entry.path().display(), i + 1, GRAPHVIZ_POSTFLOW_MSG); } } }); diff --git a/src/tools/tidy/src/features.rs b/src/tools/tidy/src/features.rs index 6d94417a10f1..f18feda533c9 100644 --- a/src/tools/tidy/src/features.rs +++ b/src/tools/tidy/src/features.rs @@ -9,8 +9,9 @@ //! * All unstable lang features have tests to ensure they are actually unstable. //! * Language features in a group are sorted by feature name. -use crate::walk::{filter_dirs, walk, walk_many}; +use crate::walk::{filter_dirs, filter_not_rust, walk, walk_many}; use std::collections::hash_map::{Entry, HashMap}; +use std::ffi::OsStr; use std::fmt; use std::fs; use std::num::NonZeroU32; @@ -101,17 +102,15 @@ pub fn check( &tests_path.join("rustdoc-ui"), &tests_path.join("rustdoc"), ], - filter_dirs, + |path| { + filter_dirs(path) + || filter_not_rust(path) + || path.file_name() == Some(OsStr::new("features.rs")) + || path.file_name() == Some(OsStr::new("diagnostic_list.rs")) + }, &mut |entry, contents| { let file = entry.path(); let filename = file.file_name().unwrap().to_string_lossy(); - if !filename.ends_with(".rs") - || filename == "features.rs" - || filename == "diagnostic_list.rs" - { - return; - } - let filen_underscore = filename.replace('-', "_").replace(".rs", ""); let filename_is_gate_test = test_filen_gate(&filen_underscore, &mut features); diff --git a/src/tools/tidy/src/main.rs b/src/tools/tidy/src/main.rs index ced1c0240152..f59406c404ba 100644 --- a/src/tools/tidy/src/main.rs +++ b/src/tools/tidy/src/main.rs @@ -120,7 +120,6 @@ fn main() { check!(edition, &library_path); check!(alphabetical, &src_path); - check!(alphabetical, &tests_path); check!(alphabetical, &compiler_path); check!(alphabetical, &library_path); diff --git a/src/tools/tidy/src/style.rs b/src/tools/tidy/src/style.rs index 75a4586cb7f1..e3f04840bc71 100644 --- a/src/tools/tidy/src/style.rs +++ b/src/tools/tidy/src/style.rs @@ -19,7 +19,7 @@ use crate::walk::{filter_dirs, walk}; use regex::{Regex, RegexSet}; -use std::path::Path; +use std::{ffi::OsStr, path::Path}; /// Error code markdown is restricted to 80 columns because they can be /// displayed on the console with --example. @@ -228,21 +228,28 @@ fn is_unexplained_ignore(extension: &str, line: &str) -> bool { pub fn check(path: &Path, bad: &mut bool) { fn skip(path: &Path) -> bool { - filter_dirs(path) || skip_markdown_path(path) + if filter_dirs(path) || skip_markdown_path(path) { + return true; + } + + let extensions = ["rs", "py", "js", "sh", "c", "cpp", "h", "md", "css", "ftl", "goml"]; + if extensions.iter().all(|e| path.extension() != Some(OsStr::new(e))) { + return true; + } + + // We only check CSS files in rustdoc. + path.extension().map_or(false, |e| e == "css") && !is_in(path, "src", "librustdoc") } + let problematic_consts_strings: Vec = (PROBLEMATIC_CONSTS.iter().map(u32::to_string)) .chain(PROBLEMATIC_CONSTS.iter().map(|v| format!("{:x}", v))) .chain(PROBLEMATIC_CONSTS.iter().map(|v| format!("{:X}", v))) .collect(); let problematic_regex = RegexSet::new(problematic_consts_strings.as_slice()).unwrap(); + walk(path, skip, &mut |entry, contents| { let file = entry.path(); let filename = file.file_name().unwrap().to_string_lossy(); - let extensions = - [".rs", ".py", ".js", ".sh", ".c", ".cpp", ".h", ".md", ".css", ".ftl", ".goml"]; - if extensions.iter().all(|e| !filename.ends_with(e)) || filename.starts_with(".#") { - return; - } let is_style_file = filename.ends_with(".css"); let under_rustfmt = filename.ends_with(".rs") && @@ -253,11 +260,6 @@ pub fn check(path: &Path, bad: &mut bool) { a.ends_with("src/doc/book") }); - if is_style_file && !is_in(file, "src", "librustdoc") { - // We only check CSS files in rustdoc. - return; - } - if contents.is_empty() { tidy_error!(bad, "{}: empty file", file.display()); } diff --git a/src/tools/tidy/src/target_specific_tests.rs b/src/tools/tidy/src/target_specific_tests.rs index f41fa4fcce1b..e0fa6aceb853 100644 --- a/src/tools/tidy/src/target_specific_tests.rs +++ b/src/tools/tidy/src/target_specific_tests.rs @@ -4,6 +4,8 @@ use std::collections::BTreeMap; use std::path::Path; +use crate::walk::filter_not_rust; + const COMMENT: &str = "//"; const LLVM_COMPONENTS_HEADER: &str = "needs-llvm-components:"; const COMPILE_FLAGS_HEADER: &str = "compile-flags:"; @@ -35,61 +37,57 @@ struct RevisionInfo<'a> { } pub fn check(path: &Path, bad: &mut bool) { - crate::walk::walk( - path, - |path| path.extension().map(|p| p == "rs") == Some(false), - &mut |entry, content| { - let file = entry.path().display(); - let mut header_map = BTreeMap::new(); - iter_header(content, &mut |cfg, directive| { - if let Some(value) = directive.strip_prefix(LLVM_COMPONENTS_HEADER) { - let info = header_map.entry(cfg).or_insert(RevisionInfo::default()); - let comp_vec = info.llvm_components.get_or_insert(Vec::new()); - for component in value.split(' ') { - let component = component.trim(); - if !component.is_empty() { - comp_vec.push(component); - } - } - } else if directive.starts_with(COMPILE_FLAGS_HEADER) { - let compile_flags = &directive[COMPILE_FLAGS_HEADER.len()..]; - if let Some((_, v)) = compile_flags.split_once("--target") { - if let Some((arch, _)) = - v.trim_start_matches(|c| c == ' ' || c == '=').split_once("-") - { - let info = header_map.entry(cfg).or_insert(RevisionInfo::default()); - info.target_arch.replace(arch); - } else { - eprintln!("{file}: seems to have a malformed --target value"); - *bad = true; - } + crate::walk::walk(path, filter_not_rust, &mut |entry, content| { + let file = entry.path().display(); + let mut header_map = BTreeMap::new(); + iter_header(content, &mut |cfg, directive| { + if let Some(value) = directive.strip_prefix(LLVM_COMPONENTS_HEADER) { + let info = header_map.entry(cfg).or_insert(RevisionInfo::default()); + let comp_vec = info.llvm_components.get_or_insert(Vec::new()); + for component in value.split(' ') { + let component = component.trim(); + if !component.is_empty() { + comp_vec.push(component); } } - }); - for (rev, RevisionInfo { target_arch, llvm_components }) in &header_map { - let rev = rev.unwrap_or("[unspecified]"); - match (target_arch, llvm_components) { - (None, None) => {} - (Some(_), None) => { - eprintln!( - "{}: revision {} should specify `{}` as it has `--target` set", - file, rev, LLVM_COMPONENTS_HEADER - ); + } else if directive.starts_with(COMPILE_FLAGS_HEADER) { + let compile_flags = &directive[COMPILE_FLAGS_HEADER.len()..]; + if let Some((_, v)) = compile_flags.split_once("--target") { + if let Some((arch, _)) = + v.trim_start_matches(|c| c == ' ' || c == '=').split_once("-") + { + let info = header_map.entry(cfg).or_insert(RevisionInfo::default()); + info.target_arch.replace(arch); + } else { + eprintln!("{file}: seems to have a malformed --target value"); *bad = true; } - (None, Some(_)) => { - eprintln!( - "{}: revision {} should not specify `{}` as it doesn't need `--target`", - file, rev, LLVM_COMPONENTS_HEADER - ); - *bad = true; - } - (Some(_), Some(_)) => { - // FIXME: check specified components against the target architectures we - // gathered. - } } } - }, - ); + }); + for (rev, RevisionInfo { target_arch, llvm_components }) in &header_map { + let rev = rev.unwrap_or("[unspecified]"); + match (target_arch, llvm_components) { + (None, None) => {} + (Some(_), None) => { + eprintln!( + "{}: revision {} should specify `{}` as it has `--target` set", + file, rev, LLVM_COMPONENTS_HEADER + ); + *bad = true; + } + (None, Some(_)) => { + eprintln!( + "{}: revision {} should not specify `{}` as it doesn't need `--target`", + file, rev, LLVM_COMPONENTS_HEADER + ); + *bad = true; + } + (Some(_), Some(_)) => { + // FIXME: check specified components against the target architectures we + // gathered. + } + } + } + }); } diff --git a/src/tools/tidy/src/walk.rs b/src/tools/tidy/src/walk.rs index 94152e75168f..90cd62531d0c 100644 --- a/src/tools/tidy/src/walk.rs +++ b/src/tools/tidy/src/walk.rs @@ -1,6 +1,6 @@ use ignore::DirEntry; -use std::{fs::File, io::Read, path::Path}; +use std::{ffi::OsStr, fs::File, io::Read, path::Path}; /// The default directory filter. pub fn filter_dirs(path: &Path) -> bool { @@ -33,6 +33,11 @@ pub fn filter_dirs(path: &Path) -> bool { skip.iter().any(|p| path.ends_with(p)) } +/// Filter for only files that end in `.rs`. +pub fn filter_not_rust(path: &Path) -> bool { + !path.is_dir() && path.extension() != Some(OsStr::new("rs")) +} + pub fn walk_many( paths: &[&Path], skip: impl Clone + Send + Sync + 'static + Fn(&Path) -> bool, From d26a15563d34c3c77788e48d880d1c39d3770fb3 Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Sun, 5 Mar 2023 07:37:44 -0600 Subject: [PATCH 51/57] Make `ui_tests` non-quadratic Previously, it would walk each directory twice: once in the main `Walk` iterator, and once to count the number of entries in the directory. Now it only walks each directory once. --- src/tools/tidy/src/ui_tests.rs | 64 ++++++++++++++++------------------ 1 file changed, 30 insertions(+), 34 deletions(-) diff --git a/src/tools/tidy/src/ui_tests.rs b/src/tools/tidy/src/ui_tests.rs index 15c36923e885..ec8edf84ef38 100644 --- a/src/tools/tidy/src/ui_tests.rs +++ b/src/tools/tidy/src/ui_tests.rs @@ -3,50 +3,46 @@ //! - there are no stray `.stderr` files use ignore::Walk; -use ignore::WalkBuilder; +use std::collections::HashMap; use std::fs; -use std::path::Path; +use std::path::{Path, PathBuf}; const ENTRY_LIMIT: usize = 1000; // FIXME: The following limits should be reduced eventually. const ROOT_ENTRY_LIMIT: usize = 940; const ISSUES_ENTRY_LIMIT: usize = 1978; -fn check_entries(path: &Path, bad: &mut bool) { - for dir in Walk::new(&path.join("ui")) { +fn check_entries(tests_path: &Path, bad: &mut bool) { + let mut directories: HashMap = HashMap::new(); + + for dir in Walk::new(&tests_path.join("ui")) { if let Ok(entry) = dir { - if entry.file_type().map(|ft| ft.is_dir()).unwrap_or(false) { - let dir_path = entry.path(); - // Use special values for these dirs. - let is_root = path.join("ui") == dir_path; - let is_issues_dir = path.join("ui/issues") == dir_path; - let limit = if is_root { - ROOT_ENTRY_LIMIT - } else if is_issues_dir { - ISSUES_ENTRY_LIMIT - } else { - ENTRY_LIMIT - }; + let parent = entry.path().parent().unwrap().to_path_buf(); + *directories.entry(parent).or_default() += 1; + } + } - let count = WalkBuilder::new(&dir_path) - .max_depth(Some(1)) - .build() - .into_iter() - .collect::>() - .len() - - 1; // remove the dir itself + for (dir_path, count) in directories { + // Use special values for these dirs. + let is_root = tests_path.join("ui") == dir_path; + let is_issues_dir = tests_path.join("ui/issues") == dir_path; + let limit = if is_root { + ROOT_ENTRY_LIMIT + } else if is_issues_dir { + ISSUES_ENTRY_LIMIT + } else { + ENTRY_LIMIT + }; - if count > limit { - tidy_error!( - bad, - "following path contains more than {} entries, \ - you should move the test to some relevant subdirectory (current: {}): {}", - limit, - count, - dir_path.display() - ); - } - } + if count > limit { + tidy_error!( + bad, + "following path contains more than {} entries, \ + you should move the test to some relevant subdirectory (current: {}): {}", + limit, + count, + dir_path.display() + ); } } } From 19b272a94b6f311affc86d721c34519299144681 Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Sun, 5 Mar 2023 07:49:28 -0600 Subject: [PATCH 52/57] Use a single WalkBuilder for multiple paths --- src/tools/tidy/src/bins.rs | 2 +- src/tools/tidy/src/ui_tests.rs | 58 +++++++++++++++++----------------- src/tools/tidy/src/walk.rs | 29 +++++++++-------- 3 files changed, 45 insertions(+), 44 deletions(-) diff --git a/src/tools/tidy/src/bins.rs b/src/tools/tidy/src/bins.rs index 2d6abe59343f..070ce93f97c1 100644 --- a/src/tools/tidy/src/bins.rs +++ b/src/tools/tidy/src/bins.rs @@ -103,7 +103,7 @@ mod os_impl { // FIXME: we don't need to look at all binaries, only files that have been modified in this branch // (e.g. using `git ls-files`). - walk_no_read(path, |path| filter_dirs(path) || path.ends_with("src/etc"), &mut |entry| { + walk_no_read(&[path], |path| filter_dirs(path) || path.ends_with("src/etc"), &mut |entry| { let file = entry.path(); let extension = file.extension(); let scripts = ["py", "sh", "ps1"]; diff --git a/src/tools/tidy/src/ui_tests.rs b/src/tools/tidy/src/ui_tests.rs index ec8edf84ef38..66f5c932be2a 100644 --- a/src/tools/tidy/src/ui_tests.rs +++ b/src/tools/tidy/src/ui_tests.rs @@ -49,37 +49,37 @@ fn check_entries(tests_path: &Path, bad: &mut bool) { pub fn check(path: &Path, bad: &mut bool) { check_entries(&path, bad); - for path in &[&path.join("ui"), &path.join("ui-fulldeps")] { - crate::walk::walk_no_read(path, |_| false, &mut |entry| { - let file_path = entry.path(); - if let Some(ext) = file_path.extension() { - if ext == "stderr" || ext == "stdout" { - // Test output filenames have one of the formats: - // ``` - // $testname.stderr - // $testname.$mode.stderr - // $testname.$revision.stderr - // $testname.$revision.$mode.stderr - // ``` - // - // For now, just make sure that there is a corresponding - // `$testname.rs` file. - // - // NB: We do not use file_stem() as some file names have multiple `.`s and we - // must strip all of them. - let testname = - file_path.file_name().unwrap().to_str().unwrap().split_once('.').unwrap().0; - if !file_path.with_file_name(testname).with_extension("rs").exists() { - tidy_error!(bad, "Stray file with UI testing output: {:?}", file_path); - } + let (ui, ui_fulldeps) = (path.join("ui"), path.join("ui-fulldeps")); + let paths = [ui.as_path(), ui_fulldeps.as_path()]; + crate::walk::walk_no_read(&paths, |_| false, &mut |entry| { + let file_path = entry.path(); + if let Some(ext) = file_path.extension() { + if ext == "stderr" || ext == "stdout" { + // Test output filenames have one of the formats: + // ``` + // $testname.stderr + // $testname.$mode.stderr + // $testname.$revision.stderr + // $testname.$revision.$mode.stderr + // ``` + // + // For now, just make sure that there is a corresponding + // `$testname.rs` file. + // + // NB: We do not use file_stem() as some file names have multiple `.`s and we + // must strip all of them. + let testname = + file_path.file_name().unwrap().to_str().unwrap().split_once('.').unwrap().0; + if !file_path.with_file_name(testname).with_extension("rs").exists() { + tidy_error!(bad, "Stray file with UI testing output: {:?}", file_path); + } - if let Ok(metadata) = fs::metadata(file_path) { - if metadata.len() == 0 { - tidy_error!(bad, "Empty file with UI testing output: {:?}", file_path); - } + if let Ok(metadata) = fs::metadata(file_path) { + if metadata.len() == 0 { + tidy_error!(bad, "Empty file with UI testing output: {:?}", file_path); } } } - }); - } + } + }); } diff --git a/src/tools/tidy/src/walk.rs b/src/tools/tidy/src/walk.rs index 90cd62531d0c..2ade22c209f5 100644 --- a/src/tools/tidy/src/walk.rs +++ b/src/tools/tidy/src/walk.rs @@ -35,26 +35,24 @@ pub fn filter_dirs(path: &Path) -> bool { /// Filter for only files that end in `.rs`. pub fn filter_not_rust(path: &Path) -> bool { - !path.is_dir() && path.extension() != Some(OsStr::new("rs")) + path.extension() != Some(OsStr::new("rs")) && !path.is_dir() +} + +pub fn walk( + path: &Path, + skip: impl Clone + Send + Sync + 'static + Fn(&Path) -> bool, + f: &mut dyn FnMut(&DirEntry, &str), +) { + walk_many(&[path], skip, f); } pub fn walk_many( paths: &[&Path], skip: impl Clone + Send + Sync + 'static + Fn(&Path) -> bool, f: &mut dyn FnMut(&DirEntry, &str), -) { - for path in paths { - walk(path, skip.clone(), f); - } -} - -pub fn walk( - path: &Path, - skip: impl Send + Sync + 'static + Fn(&Path) -> bool, - f: &mut dyn FnMut(&DirEntry, &str), ) { let mut contents = Vec::new(); - walk_no_read(path, skip, &mut |entry| { + walk_no_read(paths, skip, &mut |entry| { contents.clear(); let mut file = t!(File::open(entry.path()), entry.path()); t!(file.read_to_end(&mut contents), entry.path()); @@ -67,11 +65,14 @@ pub fn walk( } pub(crate) fn walk_no_read( - path: &Path, + paths: &[&Path], skip: impl Send + Sync + 'static + Fn(&Path) -> bool, f: &mut dyn FnMut(&DirEntry), ) { - let mut walker = ignore::WalkBuilder::new(path); + let mut walker = ignore::WalkBuilder::new(paths[0]); + for path in &paths[1..] { + walker.add(path); + } let walker = walker.filter_entry(move |e| !skip(e.path())); for entry in walker.build() { if let Ok(entry) = entry { From 3a58b2b3b065fcb367357482f636ce918d1080bd Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Sun, 5 Mar 2023 07:59:36 -0600 Subject: [PATCH 53/57] Let tidy use more threads This has a significant speedup for me locally, from about 1.3 seconds to .9 seconds. --- src/bootstrap/test.rs | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs index f5d680df1133..baddc9da48db 100644 --- a/src/bootstrap/test.rs +++ b/src/bootstrap/test.rs @@ -1118,7 +1118,11 @@ impl Step for Tidy { cmd.arg(&builder.src); cmd.arg(&builder.initial_cargo); cmd.arg(&builder.out); - cmd.arg(builder.jobs().to_string()); + // Tidy is heavily IO constrained. Still respect `-j`, but use a higher limit if `jobs` hasn't been configured. + let jobs = builder.config.jobs.unwrap_or_else(|| { + 8 * std::thread::available_parallelism().map_or(1, std::num::NonZeroUsize::get) as u32 + }); + cmd.arg(jobs.to_string()); if builder.is_verbose() { cmd.arg("--verbose"); } From 675c4aa2c1c142415d4e95bf550ec0b1de2493d0 Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Sat, 18 Mar 2023 00:29:53 -0500 Subject: [PATCH 54/57] address review comments --- .gitignore | 1 + .../src/build/expr/as_rvalue.rs | 47 ++++++++++++++----- .../rustc_mir_build/src/build/matches/mod.rs | 4 +- compiler/rustc_mir_build/src/build/mod.rs | 19 ++++---- src/tools/tidy/src/style.rs | 5 ++ 5 files changed, 52 insertions(+), 24 deletions(-) diff --git a/.gitignore b/.gitignore index ce797a7a8371..04d2597ecc69 100644 --- a/.gitignore +++ b/.gitignore @@ -42,6 +42,7 @@ no_llvm_build /llvm/ /mingw-build/ build/ +!/compiler/rustc_mir_build/src/build/ /build-rust-analyzer/ /dist/ /unicode-downloads diff --git a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs index 9f48986b1ad8..140d1154718f 100644 --- a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs +++ b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs @@ -73,19 +73,34 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { } ExprKind::Binary { op, lhs, rhs } => { let lhs = unpack!( - block = - this.as_operand(block, scope, &this.thir[lhs], LocalInfo::Boring, NeedsTemporary::Maybe) + block = this.as_operand( + block, + scope, + &this.thir[lhs], + LocalInfo::Boring, + NeedsTemporary::Maybe + ) ); let rhs = unpack!( - block = - this.as_operand(block, scope, &this.thir[rhs], LocalInfo::Boring, NeedsTemporary::No) + block = this.as_operand( + block, + scope, + &this.thir[rhs], + LocalInfo::Boring, + NeedsTemporary::No + ) ); this.build_binary_op(block, op, expr_span, expr.ty, lhs, rhs) } ExprKind::Unary { op, arg } => { let arg = unpack!( - block = - this.as_operand(block, scope, &this.thir[arg], LocalInfo::Boring, NeedsTemporary::No) + block = this.as_operand( + block, + scope, + &this.thir[arg], + LocalInfo::Boring, + NeedsTemporary::No + ) ); // Check for -MIN on signed integers if this.check_overflow && op == UnOp::Neg && expr.ty.is_signed() { @@ -272,8 +287,13 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { } ExprKind::Pointer { cast, source } => { let source = unpack!( - block = - this.as_operand(block, scope, &this.thir[source], LocalInfo::Boring, NeedsTemporary::No) + block = this.as_operand( + block, + scope, + &this.thir[source], + LocalInfo::Boring, + NeedsTemporary::No + ) ); block.and(Rvalue::Cast(CastKind::Pointer(cast), source, expr.ty)) } @@ -502,8 +522,10 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { Category::of(&expr.kind), Some(Category::Rvalue(RvalueFunc::AsRvalue) | Category::Constant) )); - let operand = - unpack!(block = this.as_operand(block, scope, expr, LocalInfo::Boring, NeedsTemporary::No)); + let operand = unpack!( + block = + this.as_operand(block, scope, expr, LocalInfo::Boring, NeedsTemporary::No) + ); block.and(Rvalue::Use(operand)) } } @@ -662,8 +684,9 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { // Repeating a const does nothing } else { // For a non-const, we may need to generate an appropriate `Drop` - let value_operand = - unpack!(block = this.as_operand(block, scope, value, LocalInfo::Boring, NeedsTemporary::No)); + let value_operand = unpack!( + block = this.as_operand(block, scope, value, LocalInfo::Boring, NeedsTemporary::No) + ); if let Operand::Move(to_drop) = value_operand { let success = this.cfg.start_new_block(); this.cfg.terminate( diff --git a/compiler/rustc_mir_build/src/build/matches/mod.rs b/compiler/rustc_mir_build/src/build/matches/mod.rs index 22785dfd2ce0..2d52102db2cc 100644 --- a/compiler/rustc_mir_build/src/build/matches/mod.rs +++ b/compiler/rustc_mir_build/src/build/matches/mod.rs @@ -2252,7 +2252,9 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { user_ty: None, source_info, internal: false, - local_info: ClearCrossCrate::Set(Box::new(LocalInfo::User(BindingForm::RefForGuard))), + local_info: ClearCrossCrate::Set(Box::new(LocalInfo::User( + BindingForm::RefForGuard, + ))), }); self.var_debug_info.push(VarDebugInfo { name, diff --git a/compiler/rustc_mir_build/src/build/mod.rs b/compiler/rustc_mir_build/src/build/mod.rs index 6814fd4cb35e..80d8b27336c5 100644 --- a/compiler/rustc_mir_build/src/build/mod.rs +++ b/compiler/rustc_mir_build/src/build/mod.rs @@ -876,21 +876,18 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { } => { self.local_decls[local].mutability = mutability; self.local_decls[local].source_info.scope = self.source_scope; - **self.local_decls[local].local_info.as_mut().assert_crate_local() = if let Some(kind) = param.self_kind { - LocalInfo::User( - BindingForm::ImplicitSelf(kind), - ) - } else { - let binding_mode = ty::BindingMode::BindByValue(mutability); - LocalInfo::User(BindingForm::Var( - VarBindingForm { + **self.local_decls[local].local_info.as_mut().assert_crate_local() = + if let Some(kind) = param.self_kind { + LocalInfo::User(BindingForm::ImplicitSelf(kind)) + } else { + let binding_mode = ty::BindingMode::BindByValue(mutability); + LocalInfo::User(BindingForm::Var(VarBindingForm { binding_mode, opt_ty_info: param.ty_span, opt_match_place: Some((None, span)), pat_span: span, - }, - )) - }; + })) + }; self.var_indices.insert(var, LocalsForNode::One(local)); } _ => { diff --git a/src/tools/tidy/src/style.rs b/src/tools/tidy/src/style.rs index e3f04840bc71..a965c98f4849 100644 --- a/src/tools/tidy/src/style.rs +++ b/src/tools/tidy/src/style.rs @@ -228,6 +228,11 @@ fn is_unexplained_ignore(extension: &str, line: &str) -> bool { pub fn check(path: &Path, bad: &mut bool) { fn skip(path: &Path) -> bool { + if path.file_name().map_or(false, |name| name.to_string_lossy().starts_with(".#")) { + // vim or emacs temporary file + return true; + } + if filter_dirs(path) || skip_markdown_path(path) { return true; } From 4192743ab7bb5339c911a541f3aad5d3ec79c43b Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Sat, 18 Mar 2023 23:12:09 +0100 Subject: [PATCH 55/57] Revert "Auto merge of #107224 - nikic:llvm-16, r=cuviper" This reverts commit 4a04d086cac54a41517d5657b59d5fe2caca2d71, reversing changes made to 2d0a7def330ed90f416a3429dbb44c5ee2a914e5. --- .gitmodules | 2 +- src/llvm-project | 2 +- tests/codegen/array-map.rs | 6 +++--- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/.gitmodules b/.gitmodules index 0bbccb571302..e79f2f089c1e 100644 --- a/.gitmodules +++ b/.gitmodules @@ -25,7 +25,7 @@ [submodule "src/llvm-project"] path = src/llvm-project url = https://github.com/rust-lang/llvm-project.git - branch = rustc/16.0-2023-03-06 + branch = rustc/15.0-2022-12-07 [submodule "src/doc/embedded-book"] path = src/doc/embedded-book url = https://github.com/rust-embedded/book.git diff --git a/src/llvm-project b/src/llvm-project index 4bb5eab6ac3f..fd949f3034f8 160000 --- a/src/llvm-project +++ b/src/llvm-project @@ -1 +1 @@ -Subproject commit 4bb5eab6ac3faea4ab4e53c432a1643c3acec87e +Subproject commit fd949f3034f8a422ecfffa889c2823485dde4bdd diff --git a/tests/codegen/array-map.rs b/tests/codegen/array-map.rs index 7b8ab2c79a7f..9298e89e397d 100644 --- a/tests/codegen/array-map.rs +++ b/tests/codegen/array-map.rs @@ -38,10 +38,10 @@ pub fn short_integer_zip_map(x: [u32; 8], y: [u32; 8]) -> [u32; 8] { // // CHECK-LABEL: @long_integer_map #[no_mangle] -pub fn long_integer_map(x: [u32; 512]) -> [u32; 512] { +pub fn long_integer_map(x: [u32; 64]) -> [u32; 64] { // CHECK: start: - // CHECK-NEXT: alloca [512 x i32] - // CHECK-NEXT: alloca %"core::mem::manually_drop::ManuallyDrop<[u32; 512]>" + // CHECK-NEXT: alloca [64 x i32] + // CHECK-NEXT: alloca %"core::mem::manually_drop::ManuallyDrop<[u32; 64]>" // CHECK-NOT: alloca // CHECK: mul <{{[0-9]+}} x i32> // CHECK: add <{{[0-9]+}} x i32> From 332f06b8d34be8503383ca8d0e9ad279b52d1b38 Mon Sep 17 00:00:00 2001 From: Ben Kimock Date: Sun, 19 Mar 2023 13:30:08 -0400 Subject: [PATCH 56/57] Preparing for merge from rustc --- src/tools/miri/rust-version | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/tools/miri/rust-version b/src/tools/miri/rust-version index 18c2561242a3..a12ee24515d0 100644 --- a/src/tools/miri/rust-version +++ b/src/tools/miri/rust-version @@ -1 +1 @@ -511364e7874dba9649a264100407e4bffe7b5425 +ab9bb3ea368b2412531a3e8c07ba73d1dd690134 From c8ead2e693a22fe94c6b3edeb3f49c7e6aec3912 Mon Sep 17 00:00:00 2001 From: Arpad Borsos Date: Tue, 31 Jan 2023 22:13:25 +0100 Subject: [PATCH 57/57] Remove the `NodeId` of `ast::ExprKind::Async` --- compiler/rustc_ast/src/ast.rs | 10 +-- compiler/rustc_ast/src/mut_visit.rs | 3 +- compiler/rustc_ast/src/visit.rs | 2 +- compiler/rustc_ast_lowering/src/expr.rs | 77 +++++++++---------- compiler/rustc_ast_lowering/src/item.rs | 7 +- .../rustc_ast_pretty/src/pprust/state/expr.rs | 2 +- .../src/assert/context.rs | 2 +- compiler/rustc_lint/src/early.rs | 3 +- compiler/rustc_parse/src/parser/expr.rs | 2 +- compiler/rustc_resolve/src/def_collector.rs | 4 +- .../clippy_lints/src/redundant_async_block.rs | 2 +- .../src/suspicious_operation_groupings.rs | 2 +- .../clippy/clippy_utils/src/ast_utils.rs | 2 +- src/tools/rustfmt/src/expr.rs | 2 +- 14 files changed, 56 insertions(+), 64 deletions(-) diff --git a/compiler/rustc_ast/src/ast.rs b/compiler/rustc_ast/src/ast.rs index 5d164bc4b3cf..ab8b7f632e8e 100644 --- a/compiler/rustc_ast/src/ast.rs +++ b/compiler/rustc_ast/src/ast.rs @@ -1426,13 +1426,9 @@ pub enum ExprKind { Block(P, Option