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And clean it up a little.
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I'm removing empty identifiers everywhere, because in practice they
always mean "no identifier" rather than "empty identifier". (An empty
identifier is impossible.) It's better to use `Option` to mean "no
identifier" because you then can't forget about the "no identifier"
possibility.
Some specifics:
- When testing an attribute for a single name, the commit uses the
`has_name` method.
- When testing an attribute for multiple names, the commit uses the new
`has_any_name` method.
- When using `match` on an attribute, the match arms now have `Some` on
them.
In the tests, we now avoid printing empty identifiers by not printing
the identifier in the `error:` line at all, instead letting the carets
point out the problem.
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* The license exception of sha1_smol with BSD-3-Clause is no longer
needed, as `gix-*` doesn't depend on it.
* Cargo depends on zlib-rs, which is distributed under Zlib license
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Fix `opt-dist` CLI flag and make it work without LLD
Suggested in https://rust-lang.zulipchat.com/#narrow/channel/122651-general/topic/experiment.20with.20.60opt-dist.20local.60.20in.20MSYS2/with/512456991.
r? `@jieyouxu`
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Rename `LifetimeName` as `LifetimeKind`.
It's a much better name, more consistent with how we name such things.
Also rename `Lifetime::res` as `Lifetime::kind` to match. I suspect this field used to have the type `LifetimeRes` and then the type was changed but the field name remained the same.
r? ``@BoxyUwU``
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The essence of the bug is that bounds on `impl Trait` got lowered with incorrect bound vars, as if we were lowering the parent.
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- realted to https://github.com/rust-lang/rust-analyzer/issues/9412#issuecomment-2810772246
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* [Fix a race with deadlock detection](https://github.com/rust-lang/rustc-rayon/pull/15)
* [Cherry-pick changes from upstream rayon-core](https://github.com/rust-lang/rustc-rayon/pull/16)
- This also removes a few dependencies from rustc's tidy list.
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related shims
Making type consistent in shims
pread return type fix
make clock_gettime shim type consistent
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remove_and_create_dir_all
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minor: Fix signature of libc memory usage function on Linux
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A soundness issue!
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Update books
## rust-lang/book
1 commits in 45f05367360f033f89235eacbbb54e8d73ce6b70..d33916341d480caede1d0ae57cbeae23aab23e88
2025-04-08 18:24:27 UTC to 2025-04-08 18:24:27 UTC
- Ch01+ch02 after tech review (rust-lang/book#4329)
## rust-lang/edition-guide
2 commits in 1e27e5e6d5133ae4612f5cc195c15fc8d51b1c9c..467f45637b73ec6aa70fb36bc3054bb50b8967ea
2025-04-15 19:49:59 UTC to 2025-04-11 15:27:31 UTC
- fix grammar errors (rust-lang/edition-guide#374)
- remove the unused and deprecated `multilingual` field from `book.toml` (rust-lang/edition-guide#375)
## rust-lang/nomicon
2 commits in b4448fa406a6dccde62d1e2f34f70fc51814cdcc..0c10c30cc54736c5c194ce98c50e2de84eeb6e79
2025-04-09 01:54:42 UTC to 2025-04-07 20:22:31 UTC
- Remove double wording in opaque type chapter (rust-lang/nomicon#487)
- remove `rust-intrinsic` ABI (rust-lang/nomicon#485)
## rust-lang/reference
6 commits in 46435cd4eba11b66acaa42c01da5c80ad88aee4b..3340922df189bddcbaad17dc3927d51a76bcd5ed
2025-04-15 19:03:24 UTC to 2025-04-10 01:56:25 UTC
- Add a new grammar renderer (rust-lang/reference#1787)
- Misc. spelling fixes (rust-lang/reference#1785)
- Fix std::ops links in range-expr (rust-lang/reference#1786)
- traits.md: remove unusual formatting (rust-lang/reference#1784)
- doc: add missing space (rust-lang/reference#1782)
- spelling fix, Discrimants -> Discriminants (rust-lang/reference#1783)
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Fix some tidy paper cuts
The main thing this fixes is that currently, if you run `x t tidy` it will format ~6K files, even though it's supposed to format only modified files (whatever this is a useful optimization or not is besides the point). The problem is that `x t tidy` never writes the `rustfmt` stamp, so it always assumes `rustfmt` that was last used is outdated and we need to recheck everything. This PR fixes it by actually writing the stamp.
There are also some minor tweaks to comments/diagnostics. cc ```@Kobzol``` this probably conflicts with #138591. I didn't fix anything, just tried to document better the status quo.
r? ```@jieyouxu```
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Fix some bootstrap papercuts
... related to jj and my `./build` symlink setup[^1].
I'm not sure if these are good solutions, but they seem to work. See commits for a bit more info.
r? ``@jieyouxu``
[^1]: see #139804
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fix: highlighting for tail expr in labelled blocks
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fix: use `ast::TokenTree` in `make::expr_macro`
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feat: add `pub(crate) mod` option for unlinked files
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Build aarch64 builds on CI with PGO
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Signed-off-by: Prajwal S N <prajwalnadig21@gmail.com>
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feat: enhance signature help to display generic parameters for callables and default values for generic args
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fix: `Extract into` function include inline variable in fmt macro
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Remove incorrect doc comment
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`#[target_feature]` attributes refer to a target-specific list of
features. Enabling certain features can imply enabling other features.
Certain features are always enabled on certain targets, since they are
required by the target's ABI. Features can also be enabled indirectly
based on other compiler flags.
Feature information is ultimately known to `rustc`. Rather than force
external tools to track it -- which may be wildly impractical due to
`-C target-cpu` -- have `rustdoc` output `rustc`'s feature data.
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It's a much better name, more consistent with how we name such things.
Also rename `Lifetime::res` as `Lifetime::kind` to match. I suspect this
field used to have the type `LifetimeRes` and then the type was changed
but the field name remained the same.
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Apparently there are tests that print canonical paths *and* tests which
print non-canonical paths.
An example of the latter is `tests/ui/type_length_limit.rs`.
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default values for generic args
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Allow training PGO on a custom crate and enable it Windows on CI
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This gets us glibc 2.28 without using `cargo zigbuild`, which is not compatible with PGO.
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Implement file deletion on Windows
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Rollup of 17 pull requests
Successful merges:
- #138374 (Enable contracts for const functions)
- #138380 (ci: add runners for vanilla LLVM 20)
- #138393 (Allow const patterns of matches to contain pattern types)
- #139517 (std: sys: process: uefi: Use NULL stdin by default)
- #139554 (std: add Output::exit_ok)
- #139660 (compiletest: Add an experimental new executor to replace libtest)
- #139669 (Overhaul `AssocItem`)
- #139671 (Proc macro span API redesign: Replace proc_macro::SourceFile by Span::{file, local_file})
- #139750 (std/thread: Use default stack size from menuconfig for NuttX)
- #139772 (Remove `hir::Map`)
- #139785 (Let CStrings be either 1 or 2 byte aligned.)
- #139789 (do not unnecessarily leak auto traits in item bounds)
- #139791 (drop global where-bounds before merging candidates)
- #139798 (normalize: prefer `ParamEnv` over `AliasBound` candidates)
- #139822 (Fix: Map EOPNOTSUPP to ErrorKind::Unsupported on Unix)
- #139833 (Fix some HIR pretty-printing problems)
- #139836 (Basic tests of MPMC receiver cloning)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix fixes failures of the following tests when build directory is a
symlink:
- `tests/ui/error-codes/E{0464,0523}.rs`
- `tests/ui/crate-loading/crateresolve{1,2}.rs` (those are the same tests)
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Proc macro span API redesign: Replace proc_macro::SourceFile by Span::{file, local_file}
Simplification/redesign of the unstable proc macro span API, tracked in https://github.com/rust-lang/rust/issues/54725:
Before:
```rust
impl Span {
pub fn line(&self) -> usize;
pub fn column(&self) -> usize;
pub fn source_file(&self) -> SourceFile;
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct SourceFile { .. }
impl !Send for SourceFile {}
impl !Sync for SourceFile {}
impl SourceFile {
pub fn path(&self) -> PathBuf;
pub fn is_real(&self) -> bool;
}
```
After:
```rust
impl Span {
pub fn line(&self) -> usize;
pub fn column(&self) -> usize;
pub fn file(&self) -> String; // Mapped file name, for display purposes.
pub fn local_file(&self) -> Option<PathBuf>; // Real file name as it exists on disk.
}
```
This resolves the last blocker for stabilizing these methods. (Stabilizing will be a separate PR with FCP.)
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Overhaul `AssocItem`
`AssocItem` has multiple fields that only make sense some of the time. E.g. the `name` can be empty if it's an RPITIT associated type. It's clearer and less error prone if these fields are moved to the relevant `kind` variants.
r? ``@fee1-dead``
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