Auto merge of #2590 - RalfJung:rustup, r=RalfJung

Rustup

src/tools/miri/rust-version

@@ -1 +1 @@
-e42c4d7218b2596276152c5eb1e69335621f3086
+f382c2748aec2ada91eff88840c996644ff0f70d

src/tools/miri/test-cargo-miri/test.filter.cross-target.stdout.ref

@@ -1,9 +1,4 @@
 
-running 0 tests
-
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-
 running 0 tests
 
 test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 2 filtered out

src/tools/miri/test-cargo-miri/test.filter.stdout.ref

@@ -1,9 +1,4 @@
 
-running 0 tests
-
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-
 running 0 tests
 
 test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 2 filtered out
@@ -15,3 +10,8 @@ test simple ... ok
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 5 filtered out
 
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 4 filtered out; finished in $TIME
+

src/tools/miri/tests/fail/erroneous_const.rs

@@ -3,7 +3,6 @@
 // Inlining changes the error location
 //@compile-flags: -Zmir-opt-level=0
 #![feature(never_type)]
-#![warn(warnings, const_err)]
 
 struct PrintName<T>(T);
 impl<T> PrintName<T> {

src/tools/miri/tests/fail/erroneous_const2.rs

@@ -1,13 +1,9 @@
 const X: u32 = 5;
 const Y: u32 = 6;
 const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-//~^ERROR: any use of this value
-//~|WARN: previously accepted
+//~^ERROR: evaluation of constant value failed
 
 #[rustfmt::skip] // rustfmt bug: https://github.com/rust-lang/rustfmt/issues/5391
 fn main() {
-    println!("{}", FOO); //~ERROR: post-monomorphization error
-    //~|ERROR: evaluation of constant value failed
-    //~|ERROR: erroneous constant used
-    //~|WARN: previously accepted
+    println!("{}", FOO);
 }

src/tools/miri/tests/fail/erroneous_const2.stderr

@@ -1,39 +1,9 @@
-error: any use of this value will cause an error
-  --> $DIR/erroneous_const2.rs:LL:CC
-   |
-LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-   | --------------    ^^^^^ attempt to compute `5_u32 - 6_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
 error[E0080]: evaluation of constant value failed
   --> $DIR/erroneous_const2.rs:LL:CC
    |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
+LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
+   |                   ^^^^^ attempt to compute `5_u32 - 6_u32`, which would overflow
 
-error: erroneous constant used
-  --> $DIR/erroneous_const2.rs:LL:CC
-   |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error: post-monomorphization error: referenced constant has errors
-  --> $DIR/erroneous_const2.rs:LL:CC
-   |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
-   |
-   = note: inside `main` at $DIR/erroneous_const2.rs:LL:CC
-
-note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
-
-error: aborting due to 4 previous errors
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0080`.

src/tools/miri/tests/fail/unaligned_pointers/dyn_alignment.rs

@@ -7,7 +7,7 @@ struct MuchAlign;
 
 fn main() {
     // Try many times as this might work by chance.
-    for _ in 0..10 {
+    for _ in 0..20 {
         let buf = [0u32; 256];
         // `buf` is sufficiently aligned for `layout.align` on a `dyn Debug`, but not
         // for the actual alignment required by `MuchAlign`.

src/tools/miri/tests/fail/unaligned_pointers/reference_to_packed.rs

@@ -11,7 +11,7 @@ struct Foo {
 
 fn main() {
     // Try many times as this might work by chance.
-    for _ in 0..10 {
+    for _ in 0..20 {
         let foo = Foo { x: 42, y: 99 };
         let p = &foo.x;
         let i = *p; //~ERROR: alignment 4 is required

src/tools/miri/tests/fail/unaligned_pointers/unaligned_ptr1.rs

@@ -3,7 +3,7 @@
 
 fn main() {
     // Try many times as this might work by chance.
-    for _ in 0..10 {
+    for _ in 0..20 {
         let x = [2u16, 3, 4]; // Make it big enough so we don't get an out-of-bounds error.
         let x = &x[0] as *const _ as *const u32;
         // This must fail because alignment is violated: the allocation's base is not sufficiently aligned.

src/tools/miri/tests/fail/unaligned_pointers/unaligned_ptr3.rs

@@ -3,7 +3,7 @@
 
 fn main() {
     // Try many times as this might work by chance.
-    for _ in 0..10 {
+    for _ in 0..20 {
         let x = [2u16, 3, 4, 5]; // Make it big enough so we don't get an out-of-bounds error.
         let x = &x[0] as *const _ as *const *const u8; // cast to ptr-to-ptr, so that we load a ptr
         // This must fail because alignment is violated. Test specifically for loading pointers,

src/tools/miri/tests/fail/unaligned_pointers/unaligned_ptr4.rs

@@ -6,7 +6,7 @@ fn main() {
     // (This would be missed if u8 allocations are *always* at odd addresses.)
     //
     // Try many times as this might work by chance.
-    for _ in 0..10 {
+    for _ in 0..20 {
         let x = [0u8; 4];
         let ptr = x.as_ptr().wrapping_offset(1).cast::<u16>();
         let _val = unsafe { *ptr }; //~ERROR: but alignment

src/tools/miri/tests/fail/unaligned_pointers/unaligned_ptr_addr_of.rs

@@ -4,7 +4,7 @@ use std::ptr;
 
 fn main() {
     // Try many times as this might work by chance.
-    for _ in 0..10 {
+    for _ in 0..20 {
         let x = [2u16, 3, 4]; // Make it big enough so we don't get an out-of-bounds error.
         let x = &x[0] as *const _ as *const u32;
         // This must fail because alignment is violated: the allocation's base is not sufficiently aligned.

src/tools/miri/tests/fail/unaligned_pointers/unaligned_ptr_zst.rs

@@ -4,7 +4,7 @@
 
 fn main() {
     // Try many times as this might work by chance.
-    for i in 0..10 {
+    for i in 0..20 {
         let x = i as u8;
         let x = &x as *const _ as *const [u32; 0];
         // This must fail because alignment is violated. Test specifically for loading ZST.

src/tools/miri/tests/pass/align.rs

@@ -22,7 +22,7 @@ fn align_to() {
 
 fn main() {
     // Do this a couple times in a loop because it may work "by chance".
-    for _ in 0..10 {
+    for _ in 0..20 {
         manual_alignment();
         align_to();
     }