Update to LLVM 18.1.7
This release only contains a single commit in code that we build: 7e6ece9b4f It addresses a regression in LLVM 18.1.6 that may result in compiler crashes when targeting ppc.
check host's libstdc++ version when using ci llvm
If the host's libstdc++ version is too old using ci-llvm may result in an ABI mismatch between the local libstdc++ and libLLVM.so. This PR adds a sanity check to immediately fail at the beginning of the bootstrap before starting the actual build. I am not sure if '8' is the best threshold, but it should be a good start and we can increase it anytime if needed.
Fixes#123037
Directly add extension instead of using `Path::with_extension`
`Path::with_extension` has a nice footgun when the original path doesn't contain an extension: Anything after the last dot gets removed.
Remove the `ty` field from type system `Const`s
Fixes#125556Fixes#122908
Part of the work on `adt_const_params`/`generic_const_param_types`/`min_generic_const_exprs`/generally making the compiler nicer. cc rust-lang/project-const-generics#44
Please review commit-by-commit otherwise I wasted a lot of time not just squashing this into a giant mess (and also it'll be SO much nicer because theres a lot of fluff changes mixed in with other more careful changes if looking via File Changes
---
Why do this?
- The `ty` field keeps causing ICEs and weird behaviour due to it either being treated as "part of the const" or it being forgotten about leading to ICEs.
- As we move forward with `adt_const_params` and a potential `min_generic_const_exprs` it's going to become more complex to actually lower the correct `Ty<'tcx>`
- It muddles the idea behind how we check `Const` arguments have the correct type. By having the `ty` field it may seem like we ought to be relating it when we relate two types, or that its generally important information about the `Const`.
- Brings the compiler more in line with `a-mir-formality` as that also tracks the type of type system `Const`s via `ConstArgHasType` bounds in the env instead of on the `Const` itself.
- A lot of stuff is a lot nicer when you dont have to pass around the type of a const lol. Everywhere we construct `Const` is now significantly nicer 😅
See #125671's description for some more information about the `ty` field
---
General summary of changes in this PR:
- Add `Ty` to `ConstKind::Value` as otherwise there is no way to implement `ConstArgHasType` to ensure that const arguments are correctly typed for the parameter when we stop creating anon consts for all const args. It's also just incredibly difficult/annoying to thread the correct `Ty` around to a bunch of ctfe functions otherwise.
- Fully implement `ConstArgHasType` in both the old and new solver. Since it now has no reliance on the `ty` field it serves its originally intended purpose of being able to act as a double check that trait vs impls have correctly typed const parameters. It also will now be able to be responsible for checking types of const arguments to parameters under `min_generic_const_exprs`.
- Add `Ty` to `mir::Const::Ty`. I dont have a great understanding of why mir constants are setup like this to be honest. Regardless they need to be able to determine the type of the const and the easiest way to make this happen was to simply store the `Ty` along side the `ty::Const`. Maybe we can do better here in the future but I'd have to spend way more time looking at everywhere we use `mir::Const`.
- rustdoc has its own `Const` which also has a `ty` field. It was relatively easy to remove this.
---
r? `@lcnr` `@compiler-errors`
When `derive`ing, account for HRTB on `BareFn` fields
When given
```rust
trait SomeTrait {
type SomeType<'a>;
}
#[derive(Clone)]
struct Foo<T: SomeTrait> {
x: for<'a> fn(T::SomeType<'a>)
}
```
expand to
```rust
impl<T: ::core::clone::Clone + SomeTrait> ::core::clone::Clone for Foo<T>
where for<'a> T::SomeType<'a>: ::core::clone::Clone {
#[inline]
fn clone(&self) -> Foo<T> {
Foo { x: ::core::clone::Clone::clone(&self.x) }
}
}
```
instead of the previous invalid
```
impl<T: ::core::clone::Clone + SomeTrait> ::core::clone::Clone for Foo<T>
where T::SomeType<'a>: ::core::clone::Clone {
#[inline]
fn clone(&self) -> Foo<T> {
Foo { x: ::core::clone::Clone::clone(&self.x) }
}
}
```
Fix#122622.
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Match ergonomics 2024: align implementation with RFC
- Remove eat-two-layers (`ref_pat_everywhere`)
- Consolidate `mut_preserve_binding_mode_2024` into `ref_pat_eat_one_layer_2024`
- `&mut` no longer peels off `&`
- Apply "no `ref mut` behind `&`" rule on all editions with `ref_pat_eat_one_layer_2024`
- Require `mut_ref` feature gate for all mutable by-reference bindings
r? ``@Nadrieril``
cc https://github.com/rust-lang/rust/issues/123076
``@rustbot`` label A-edition-2024 A-patterns
Add translation support by mdbook-i18n-helpers to bootstrap
This PR add translation support by [mdbook-i18n-helpers](https://github.com/google/mdbook-i18n-helpers) to bootstrap.
This is draft PR because there is the dependency to my forked mdbook-i18n-helpers.
If this PR is acceptable, I'll send a PR to the original mdbook-i18n-helpers and remove draft after changing the dependency to the original.
Closes#124641
Don't walk the bodies of free constants for reachability.
follow-up to #122371
cc #119214
This avoids codegening items (e.g. functions) that are only used during const eval, but do not reach their final constant value (e.g. via function pointers).
r? `@tmiasko`
Rollup of 9 pull requests
Successful merges:
- #124840 (resolve: mark it undetermined if single import is not has any bindings)
- #125622 (Winnow private method candidates instead of assuming any candidate of the right name will apply)
- #125648 (Remove unused(?) `~/rustsrc` folder from docker script)
- #125672 (Add more ABI test cases to miri (RFC 3391))
- #125800 (Fix `mut` static task queue in SGX target)
- #125871 (Orphanck[old solver]: Consider opaque types to never cover type parameters)
- #125893 (Handle all GVN binops in a single place.)
- #126008 (Port `tests/run-make-fulldeps/issue-19371` to ui-fulldeps)
- #126032 (Update description of the `IsTerminal` example)
r? `@ghost`
`@rustbot` modify labels: rollup
Rollup of 10 pull requests
Successful merges:
- #124746 (`rustc --explain E0582` additional example)
- #125407 (Detect when user is trying to create a lending `Iterator` and give a custom explanation)
- #125505 (Add intra-doc-links to rustc_middle crate-level docs.)
- #125792 (Don't drop `Unsize` candidate in intercrate mode)
- #125819 (Various `HirTyLowerer` cleanups)
- #125861 (rustc_codegen_ssa: fix `get_rpath_relative_to_output` panic when lib only contains file name)
- #125911 (delete bootstrap build before switching to bumped rustc)
- #125921 (coverage: Carve out hole spans in a separate early pass)
- #125940 (std::unix::fs::get_path: using fcntl codepath for netbsd instead.)
- #126022 (set `has_unconstrained_ty_var` when generalizing aliases in bivariant contexts)
r? `@ghost`
`@rustbot` modify labels: rollup
Port `tests/run-make-fulldeps/issue-19371` to ui-fulldeps
This test can run as an ordinary `tests/ui-fulldeps` test, with the help of some additional header variable substitutions to supply a sysroot and linker.
---
Unlike #125973, this test appears to be testing something vaguely useful and breakable, which is why I didn't just delete it.
Handle all GVN binops in a single place.
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Addresses https://github.com/rust-lang/rust/pull/125359/files#r1608185319
r? ``@oli-obk``
Orphanck[old solver]: Consider opaque types to never cover type parameters
This fixes an oversight of mine in #117164. The change itself has already been FCP'ed.
This only affects the old solver, the next solver already correctly rejects the added test since #117164.
r? ``@lcnr``
Fix `mut` static task queue in SGX target
[PR 125046](https://github.com/rust-lang/rust/pull/125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI:
- The `mut` static is removed, and `Task` explicitly implements `Send`
- Renaming of the `task_queue::lock` function
- Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync`
- Storing `Task::p` as a type that implements `Send`
- Letting the compiler auto implement `Send` for `Task`
cc: ``@jethrogb``
set `has_unconstrained_ty_var` when generalizing aliases in bivariant contexts
this previously prevented the `regression-31157` benchmark from building
r? `@compiler-errors`
