These functions had `#[rustc_const_stable(feature = "const_locks", since
= "1.63.0")]` on them because they were originally taken from
`no_threads`. with d066dfd these no longer compile. Since other
platforms do not have this attribute, remove it. This fixes the build
for Xous.
Signed-off-by: Sean Cross <sean@xobs.io>
Rollup of 12 pull requests
Successful merges:
- #131375 (compiler: apply clippy::clone_on_ref_ptr for CI)
- #131520 (Mark `str::is_char_boundary` and `str::split_at*` unstably `const`.)
- #132119 (Hack out effects support for old solver)
- #132194 (Collect item bounds for RPITITs from trait where clauses just like associated types)
- #132216 (correct LLVMRustCreateThinLTOData arg types)
- #132233 (Split `boxed.rs` into a few modules)
- #132266 (riscv-soft-abi-with-float-features.rs: adapt for LLVM 20)
- #132270 (clarified doc for `std::fs::OpenOptions.truncate()`)
- #132284 (Remove my ping for rustdoc/clean/types.rs)
- #132293 (Remove myself from mentions inside `tests/ui/check-cfg` directory)
- #132312 (Delete `tests/crashes/23707.rs` because it's flaky)
- #132313 (compiletest: Rename `command-list.rs` to `directive-list.rs`)
r? `@ghost`
`@rustbot` modify labels: rollup
New lint `map_all_any_identity`
This lint has been inspired by code encountered in Clippy itself (see the first commit).
changelog: [`map_all_any_identity`]: new lint
- Don't rely on enum values defined by LLVM's C++ API
- Use safe wrapper functions instead of direct `unsafe` calls
- Consistently pass pointer/length strings instead of C strings
compiletest: Rename `command-list.rs` to `directive-list.rs`
Because I forget the name of this file literally every single time I need to find and edit it.
r? jieyouxu
Delete `tests/crashes/23707.rs` because it's flaky
It's conditioned on `only-x86_64` because it doesn't reliably fail on other platforms, it's optimization dependent and failed to ICE post-PGO in
<https://github.com/rust-lang/rust/pull/132300#issuecomment-2443279042>. Remove this test for now without prejudice against relanding the test in a more reliable form.
I removed the `S-bug-has-test` label from #23707.
r? compiler
Remove myself from mentions inside `tests/ui/check-cfg` directory
This PR removes myself from mentions inside `tests/ui/check-cfg` directory.
I'm not sure this particular mention has ever been useful to me, and lately it's been too annoying for me to ignore it.
So remove my-self from it.
Split `boxed.rs` into a few modules
I wanted to add an impl for `Box<_>`, but was quickly discouraged by the 3K file. This splits off a couple bits, making it at least a bit more manageable.
r? ````@workingjubilee```` (I think you are not bothered by refactorings like this?)
correct LLVMRustCreateThinLTOData arg types
`LLVMRustCreateThinLTOData` defined in rust as
```rust
pub fn LLVMRustCreateThinLTOData(
Modules: *const ThinLTOModule,
NumModules: c_uint,
PreservedSymbols: *const *const c_char,
PreservedSymbolsLen: c_uint,
) -> Option<&'static mut ThinLTOData>;
```
but in cpp as
```cpp
extern "C" LLVMRustThinLTOData *
LLVMRustCreateThinLTOData(LLVMRustThinLTOModule *modules, int num_modules,
const char **preserved_symbols, int num_symbols) {
```
(note `c_unit` vs `int` types). Let it be actually `size_t`.
Also fixes return type of `LLVMRustDIBuilderCreateOpLLVMFragment` to uint64_t as other similar functions around, which should be correct, i assume.
Collect item bounds for RPITITs from trait where clauses just like associated types
We collect item bounds from trait where clauses for *associated types*, i.e. this:
```rust
trait Foo
where
Self::Assoc: Send
{
type Assoc;
}
```
Becomes this:
```rust
trait Foo {
type Assoc: Send;
}
```
Today, with RPITITs/AFIT and return-type notation, we don't do that, i.e.:
```rust
trait Foo where Self::method(..): Send {
fn method() -> impl Sized;
}
fn is_send(_: impl Send) {}
fn test<T: Foo>() {
is_send(T::method());
}
```
...which fails on nightly today.
Turns out it's super easy to fix this, and we just need to use the `associated_type_bounds` lowering function in `explicit_item_bounds_with_filter`, which has that logic baked in.
Hack out effects support for old solver
Opening this for vibes ✨
Turns out that a basic, somewhat incomplete implementation of host effects is achievable in the old trait solver pretty easily. This should be sufficient for us to use in the standard library itself.
Regarding incompleteness, maybe we should always treat host predicates as ambiguous in intercrate mode (at least in the old solver) to avoid any worries about accidental impl overlap or something.
r? ```@lcnr``` cc ```@fee1-dead```
Mark `str::is_char_boundary` and `str::split_at*` unstably `const`.
Tracking issues: #131516, #131518
First commit implements `const_is_char_boundary`, second commit implements `const_str_split_at` (which depends on `const_is_char_boundary`)
~~I used `const_eval_select` for `is_char_boundary` since there is a comment about optimizations that would theoretically not happen with the simple `const`-compatible version (since `slice::get` is not `const`ifiable) cc #84751. I have not checked if this code difference is still required for the optimization, so it might not be worth the code complication, but 🤷.~~
This changes `str::split_at_checked` to use a new private helper function `split_at_unchecked` (copied from `split_at_mut_unchecked`) that does pointer stuff instead of `get_unchecked`, since that is not currently `const`ifiable due to using the `SliceIndex` trait.
It's conditioned on `only-x86_64` because it doesn't reliably fail on
other platforms, it's optimization dependent and failed to ICE post-PGO
in
<https://github.com/rust-lang/rust/pull/132300#issuecomment-2443279042>.
Remove this test for now without prejudice against relanding the test in
a more reliable form.
Lint against getting pointers from immediately dropped temporaries
Fixes#123613
## Changes:
1. New lint: `dangling_pointers_from_temporaries`. Is a generalization of `temporary_cstring_as_ptr` for more types and more ways to get a temporary.
2. `temporary_cstring_as_ptr` is removed and marked as renamed to `dangling_pointers_from_temporaries`.
3. `clippy::temporary_cstring_as_ptr` is marked as renamed to `dangling_pointers_from_temporaries`.
4. Fixed a false positive[^fp] for when the pointer is not actually dangling because of lifetime extension for function/method call arguments.
5. `core::cell::Cell` is now `rustc_diagnostic_item = "Cell"`
## Questions:
- [ ] Instead of manually checking for a list of known methods and diagnostic items, maybe add some sort of annotation to those methods in library and check for the presence of that annotation? https://github.com/rust-lang/rust/pull/128985#issuecomment-2318714312
## Known limitations:
### False negatives[^fn]:
See the comments in `compiler/rustc_lint/src/dangling.rs`
1. Method calls that are not checked for:
- `temporary_unsafe_cell.get()`
- `temporary_sync_unsafe_cell.get()`
2. Ways to get a temporary that are not recognized:
- `owning_temporary.field`
- `owning_temporary[index]`
3. No checks for ref-to-ptr conversions:
- `&raw [mut] temporary`
- `&temporary as *(const|mut) _`
- `ptr::from_ref(&temporary)` and friends
[^fn]: lint **should** be emitted, but **is not**
[^fp]: lint **should not** be emitted, but **is**
Lint against getting pointers from immediately dropped temporaries
Fixes#123613
## Changes:
1. New lint: `dangling_pointers_from_temporaries`. Is a generalization of `temporary_cstring_as_ptr` for more types and more ways to get a temporary.
2. `temporary_cstring_as_ptr` is removed and marked as renamed to `dangling_pointers_from_temporaries`.
3. `clippy::temporary_cstring_as_ptr` is marked as renamed to `dangling_pointers_from_temporaries`.
4. Fixed a false positive[^fp] for when the pointer is not actually dangling because of lifetime extension for function/method call arguments.
5. `core::cell::Cell` is now `rustc_diagnostic_item = "Cell"`
## Questions:
- [ ] Instead of manually checking for a list of known methods and diagnostic items, maybe add some sort of annotation to those methods in library and check for the presence of that annotation? https://github.com/rust-lang/rust/pull/128985#issuecomment-2318714312
## Known limitations:
### False negatives[^fn]:
See the comments in `compiler/rustc_lint/src/dangling.rs`
1. Method calls that are not checked for:
- `temporary_unsafe_cell.get()`
- `temporary_sync_unsafe_cell.get()`
2. Ways to get a temporary that are not recognized:
- `owning_temporary.field`
- `owning_temporary[index]`
3. No checks for ref-to-ptr conversions:
- `&raw [mut] temporary`
- `&temporary as *(const|mut) _`
- `ptr::from_ref(&temporary)` and friends
[^fn]: lint **should** be emitted, but **is not**
[^fp]: lint **should not** be emitted, but **is**
