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`os_local` impl of `thread_local` — regardless of whether it is const and
unlike other implementations — includes an `fn __init(): EXPR`.
Existing implementation of the lint checked for the presence of said
function and whether the expr can be made const. Because for `os_local`
we always have an `__init()`, it triggers for const implementations.
The solution is to check whether the `__init()` function is already const.
If it is `const`, there is nothing to do. Otherwise, we verify that we can
make it const.
Co-authored-by: Alejandra González <blyxyas@gmail.com>
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Rename `static_mut_ref` lint to `static_mut_refs`.
(cherry picked from commit 408eeae59d35cbcaab2cfb345d24373954e74fc5)
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[Beta 1.77] Fix bootstrapping from 1.76
Due to the timing of the revert for stabilization of c_str_literal (https://github.com/rust-lang/rust/pull/119528 which reverted in 1.76) and trait_upcasting (https://github.com/rust-lang/rust/pull/120269 which reverted in 1.76), which happened after https://github.com/rust-lang/rust/pull/119211 (Bump stage0 to 1.76 beta), this resulted in some of the feature attributes not being restored which are needed to be able to bootstrap from 1.76. This restores those features.
This also includes a stage0 bump to the just released stable. This is necessary because stage0 was currently pointing at an old beta which did not contain the reverts.
Fixes #120810
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Subtree update of `rust-analyzer`
r? ghost
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Don't hash lints differently to non-lints.
`Diagnostic::keys`, which is used for hashing and equating diagnostics, has a surprising behaviour: it ignores children, but only for lints. This was added in #88493 to fix some duplicated diagnostics, but it doesn't seem necessary any more.
This commit removes the special case and only four tests have changed output, with additional errors. And those additional errors aren't exact duplicates, they're just similar. For example, in src/tools/clippy/tests/ui/same_name_method.rs we currently have this error:
```
error: method's name is the same as an existing method in a trait
--> $DIR/same_name_method.rs:75:13
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LL | fn foo() {}
| ^^^^^^^^^^^
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note: existing `foo` defined here
--> $DIR/same_name_method.rs:79:9
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LL | impl T1 for S {}
| ^^^^^^^^^^^^^^^^
```
and with this change we also get this error:
```
error: method's name is the same as an existing method in a trait
--> $DIR/same_name_method.rs:75:13
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LL | fn foo() {}
| ^^^^^^^^^^^
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note: existing `foo` defined here
--> $DIR/same_name_method.rs:81:9
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LL | impl T2 for S {}
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```
I think printing this second argument is reasonable, possibly even preferable to hiding it. And the other cases are similar.
r? `@estebank`
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hir: Refactor getters for owner nodes
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`Diagnostic::keys`, which is used for hashing and equating diagnostics,
has a surprising behaviour: it ignores children, but only for lints.
This was added in #88493 to fix some duplicated diagnostics, but it
doesn't seem necessary any more.
This commit removes the special case and only four tests have changed
output, with additional errors. And those additional errors aren't
exact duplicates, they're just similar. For example, in
src/tools/clippy/tests/ui/same_name_method.rs we currently have this
error:
```
error: method's name is the same as an existing method in a trait
--> $DIR/same_name_method.rs:75:13
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LL | fn foo() {}
| ^^^^^^^^^^^
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note: existing `foo` defined here
--> $DIR/same_name_method.rs:79:9
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LL | impl T1 for S {}
| ^^^^^^^^^^^^^^^^
```
and with this change we also get this error:
```
error: method's name is the same as an existing method in a trait
--> $DIR/same_name_method.rs:75:13
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LL | fn foo() {}
| ^^^^^^^^^^^
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note: existing `foo` defined here
--> $DIR/same_name_method.rs:81:9
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LL | impl T2 for S {}
| ^^^^^^^^^^^^^^^^
```
I think printing this second argument is reasonable, possibly even
preferable to hiding it. And the other cases are similar.
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Remove various `has_errors` or `err_count` uses
follow up to https://github.com/rust-lang/rust/pull/119895
r? `@nnethercote` since you recently did something similar.
There are so many more of these, but I wanted to get a PR out instead of growing the commit list indefinitely. The commits all work on their own and can be reviewed commit by commit.
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The query accept arbitrary DefIds, not just owner DefIds.
The return can be an `Option` because if there are no nodes, then it doesn't matter whether it's due to NonOwner or Phantom.
Also rename the query to `opt_hir_owner_nodes`.
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Diagnostic lifetimes cleanups
Some diagnostic simplifications.
r? `@oli-obk`
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Move UI issue tests to subdirectories
I've moved issue tests numbered 1920, 3668, 5997, 23302, 32122, 40510, 57741, 71676, and 76077 to relevant better-named subdirectories (tracking issue #73494). The issues were chosen by having the highest number of files per issue.
I adjusted the `ISSUES_ENTRY_LIMIT` because `tidy` was shouting at me.
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Because it's almost always static.
This makes `impl IntoDiagnosticArg for DiagnosticArgValue` trivial,
which is nice.
There are a few diagnostics constructed in
`compiler/rustc_mir_build/src/check_unsafety.rs` and
`compiler/rustc_mir_transform/src/errors.rs` that now need symbols
converted to `String` with `to_string` instead of `&str` with `as_str`,
but that' no big deal, and worth it for the simplifications elsewhere.
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Issue tests numbered 1920, 3668, 5997, 23302, 32122, 40510, 57741, 71676, and 76077 were moved to relevant better-named subdirectories. ISSUES_ENTRY_LIMIT was adjusted to match new number of files and FIXME note was expanded.
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Switch `NonZero` alias direction.
Step 4 mentioned in https://github.com/rust-lang/rust/pull/100428#pullrequestreview-1767139731.
Depends on https://github.com/rust-lang/rust/pull/120160.
r? `@dtolnay`
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Miri subtree update
r? `@ghost`
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Error codes are integers, but `String` is used everywhere to represent
them. Gross!
This commit introduces `ErrCode`, an integral newtype for error codes,
replacing `String`. It also introduces a constant for every error code,
e.g. `E0123`, and removes the `error_code!` macro. The constants are
imported wherever used with `use rustc_errors::codes::*`.
With the old code, we have three different ways to specify an error code
at a use point:
```
error_code!(E0123) // macro call
struct_span_code_err!(dcx, span, E0123, "msg"); // bare ident arg to macro call
\#[diag(name, code = "E0123")] // string
struct Diag;
```
With the new code, they all use the `E0123` constant.
```
E0123 // constant
struct_span_code_err!(dcx, span, E0123, "msg"); // constant
\#[diag(name, code = E0123)] // constant
struct Diag;
```
The commit also changes the structure of the error code definitions:
- `rustc_error_codes` now just defines a higher-order macro listing the
used error codes and nothing else.
- Because that's now the only thing in the `rustc_error_codes` crate, I
moved it into the `lib.rs` file and removed the `error_codes.rs` file.
- `rustc_errors` uses that macro to define everything, e.g. the error
code constants and the `DIAGNOSTIC_TABLES`. This is in its new
`codes.rs` file.
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freebsd add *stat calls interception support
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Bump some deps with syn 1.0 dependencies
cc #109302
`cargo update`ing `unic-langid` and `object` removes two dependencies on Syn 1.0.
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llvm: change data layout bug to an error and make it trigger more
Fixes #33446.
Don't skip the inconsistent data layout check for custom LLVMs or non-built-in targets.
With #118708, all targets will have a simple test that would trigger this error if LLVM's data layouts do change - so data layouts would be corrected during the LLVM upgrade. Therefore, with builtin targets, this error won't happen with our LLVM because each target will have been confirmed to work. With non-builtin targets, this error is probably useful to have because you can change the data layout in your target and if it is wrong then that could lead to bugs.
When using a custom LLVM, the same justification makes sense for non-builtin targets as with our LLVM, the user can update their target to match their LLVM and that's probably a good thing to do. However, with a custom LLVM, the user cannot change the builtin target data layouts if they don't match - though given that the compiler's data layout is used for layout computation and a bunch of other things - you could get some bugs because of the mismatch and probably want to know about that. I'm not sure if this is something that people do and is okay, but I doubt it?
`CFG_LLVM_ROOT` was also always set during local development with `download-ci-llvm` so this bug would never trigger locally.
In #33446, two points are raised:
- In the issue itself, changing this from a `bug!` to a proper error is what is suggested, by using `isCompatibleDataLayout` from LLVM, but that function still just does the same thing that we do and check for equality, so I've avoided the additional code necessary to do that FFI call.
- `@Mark-Simulacrum` suggests a different check is necessary to maintain backwards compatibility with old LLVM versions. I don't know how often this comes up, but we can do that with some simple string manipulation + LLVM version checks as happens already for LLVM 17 just above this diff.
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Rollup of 9 pull requests
Successful merges:
- #117420 (Make `#![allow_internal_unstable(..)]` work with `stmt_expr_attributes`)
- #117678 (Stabilize `slice_group_by`)
- #119917 (Remove special-case handling of `vec.split_off(0)`)
- #120117 (Update `std::io::Error::downcast` return type)
- #120329 (RFC 3349 precursors)
- #120339 (privacy: Refactor top-level visiting in `NamePrivacyVisitor`)
- #120345 (Clippy subtree update)
- #120360 (Don't fire `OPAQUE_HIDDEN_INFERRED_BOUND` on sized return of AFIT)
- #120372 (Fix outdated comment on Box)
r? `@ghost`
`@rustbot` modify labels: rollup
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Clippy subtree update
r? `@Manishearth`
Closes https://github.com/rust-lang/rust-clippy/issues/12148
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RFC 3349 precursors
Some cleanups I found while working on RFC 3349 that are worth landing separately.
r? `@fee1-dead`
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Co-authored-by: y21 <30553356+y21@users.noreply.github.com>
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remove StructuralEq trait
The documentation given for the trait is outdated: *all* function pointers implement `PartialEq` and `Eq` these days. So the `StructuralEq` trait doesn't really seem to have any reason to exist any more.
One side-effect of this PR is that we allow matching on some consts that do not implement `Eq`. However, we already allowed matching on floats and consts containing floats, so this is not new, it is just allowed in more cases now. IMO it makes no sense at all to allow float matching but also sometimes require an `Eq` instance. If we want to require `Eq` we should adjust https://github.com/rust-lang/rust/pull/115893 to check for `Eq`, and rule out float matching for good.
Fixes https://github.com/rust-lang/rust/issues/115881
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clippy-subtree-update
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Add portable-atomic-util bug to "bugs found" list
At least, reading https://notgull.net/cautionary-unsafe-tale/ it seems fair to say Miri found this bug. `@notgull` please let me know if you are okay with having this listed here.
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Replacement of #114390: Add new intrinsic `is_var_statically_known` and optimize pow for powers of two
This adds a new intrinsic `is_val_statically_known` that lowers to [``@llvm.is.constant.*`](https://llvm.org/docs/LangRef.html#llvm-is-constant-intrinsic).` It also applies the intrinsic in the int_pow methods to recognize and optimize the idiom `2isize.pow(x)`. See #114390 for more discussion.
While I have extended the scope of the power of two optimization from #114390, I haven't added any new uses for the intrinsic. That can be done in later pull requests.
Note: When testing or using the library, be sure to use `--stage 1` or higher. Otherwise, the intrinsic will be a noop and the doctests will be skipped. If you are trying out edits, you may be interested in [`--keep-stage 0`](https://rustc-dev-guide.rust-lang.org/building/suggested.html#faster-builds-with---keep-stage).
Fixes #47234
Resolves #114390
`@Centri3`
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