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This doesn't work for translated compiler error messages.
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Relevant for the deprecation of `CommandExt::before_exit` in #125970.
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std: do not overwrite style in `get_backtrace_style`
If another thread calls `set_backtrace_style` while a `get_backtrace_style` is reading the environment variables, `get_backtrace_style` will overwrite the value. Use an atomic CAS to avoid this.
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If another thread calls `set_backtrace_style` while a `get_backtrace_style` is reading the environment variables, `get_backtrace_style` will overwrite the value. Use an atomic CAS to avoid this.
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The documentation incorrectly stated that std::env::var could return
an error for variable names containing '=' or the NUL byte. Copy the
correct documentation from var_os.
var_os was fixed in Commit 8a7a665, Pull Request #109894, which
closed Issue #109893.
This documentation was incorrectly added in commit f2c0f292, which
replaced a panic in var_os by returning None, but documented the
change as "May error if ...".
Reference the specific error values and link to them.
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Fix the name of signal 19 in library/std/src/sys/pal/unix/process/process_unix/tests.rs for mips/sparc linux
relate to #128816
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VxWorks code refactored
1. Extern TaskNameSet as minimum supported version of os is VxWorks 7 which would have taskNameSet
2. Vx_TASK_NAME_LEN is 31 on VxWorks7, defined variable res.
3. Add unsafe blocks on Non::Zero usage in available_parallelism()
4. Update vxworks docs.
r? `@tgross35`
cc `@devnexen`
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Co-authored-by: Trevor Gross <t.gross35@gmail.com>
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std float tests: special-case Miri in feature detection
Quick work-around to fix miri-test-libstd failures.
r? ``@tgross35``
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rwlock: disable 'frob' test in Miri on macOS
Due to https://github.com/rust-lang/rust/issues/121950, Miri will sometimes complain about this test on macOS. Better disable the test, as otherwise it can fail for unrelated PRs.
r? ``@joboet``
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also fix some cfg logic
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Trivial grammar fix in const keyword docs
This PR makes a trivial fix to the wording of a sentence in the `const` keyword docs.
> `const` items looks remarkably similar to `static` items, [...]
Either this should be written as
> A `const` items looks remarkably similar to a `static` item, [...]
or "looks" should be changed to "look".
I have selected the smaller diff.
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Add `f16` and `f128` math functions
This adds intrinsics and math functions for `f16` and `f128` floating point types. Support is quite limited and some things are broken so tests don't run on many platforms, but this provides a starting point.
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> `const` items looks remarkably similar to `static` items, [...]
Either this should be written as
> A `const` items looks remarkably similar to a `static` item,
or "looks" should be changed to "look".
I have selected the smaller diff.
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std::thread: set_name implementation proposal for vxWorks.
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Forbid unused unsafe in vxworks-specific std modules
Tracking issue #127747
Adding deny(unsafe_op_in_unsafe_fn) in VxWorks specific files did not cause any error.
Most of VxWorks falls back on Unix libraries. So we'll have to wait for Unix changes.
r? ```@workingjubilee```
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implement BufReader::peek
Part of https://github.com/rust-lang/rust/issues/128405
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PinCoerceUnsized trait into core
cc ``@Darksonn`` ``@wedsonaf`` ``@ojeda``
This is a PR to introduce a `PinCoerceUnsized` trait in order to make trait impls generated by the proc-macro `#[derive(SmartPointer)]`, proposed by [RFC](https://github.com/rust-lang/rfcs/blob/e17e19ac7ad1c8ccad55d4babfaee1aa107d1da5/text/3621-derive-smart-pointer.md#pincoerceunsized-1), sound. There you may find explanation, justification and discussion about the alternatives.
Note that we do not seek stabilization of this `PinCoerceUnsized` trait in the near future. The stabilisation of this trait does not block the eventual stabilization process of the `#[derive(SmartPointer)]` macro. Ideally, use of `DerefPure` is more preferrable except this will actually constitute a breaking change. `PinCoerceUnsized` emerges as a solution to the said soundness hole while avoiding the breaking change. More details on the `DerefPure` option have been described in this [section](https://github.com/rust-lang/rfcs/blob/e17e19ac7ad1c8ccad55d4babfaee1aa107d1da5/text/3621-derive-smart-pointer.md#derefpure) of the RFC linked above.
Earlier discussion can be found in this [Zulip stream](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/Pin.20and.20soundness.20of.20unsizing.20coercions) and [rust-for-linux thread](https://rust-lang.zulipchat.com/#narrow/stream/425075-rust-for-linux/topic/.23.5Bderive.28SmartPointer.29.5D.20and.20pin.20unsoundness.20rfc.233621).
try-job: dist-various-2
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r=Mark-Simulacrum
std::thread: available_parallelism implementation for vxWorks proposal.
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This PR makes a number of changes to the UNIX randomness implementation:
* Use `io::Error` for centralized error handling
* Move the file-fallback logic out of the `getrandom`-specific module
* Stop redefining the syscalls on macOS and DragonFly, they have appeared in `libc`
* Add a `OnceLock` to cache the random device file descriptor
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chore: refactor backtrace style in panic
# Refactor get_backtrace_style for better readability and potential performance improvements
This PR aims to improve the readability and maintainability of the `set_backtrace_style` and `get_backtrace_style` function.
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Revert recent changes to dead code analysis
This is a revert to recent changes to dead code analysis, namely:
* efdf219 Rollup merge of #128104 - mu001999-contrib:fix/128053, r=petrochenkov
* a70dc297a899b76793a14c5705f6ec78fd7a57a7 Rollup merge of #127017 - mu001999-contrib:dead/enhance, r=pnkfelix
* 31fe9628cf830a08e7194a446f66c668aaea86e9 Rollup merge of #127107 - mu001999-contrib:dead/enhance-2, r=pnkfelix
* 2724aeaaeb127a8073e39461caacbe21a128ce7b Rollup merge of #126618 - mu001999-contrib:dead/enhance, r=pnkfelix
* 977c5fd419ade52467f7de79d5bfc25c0c893275 Rollup merge of #126315 - mu001999-contrib:fix/126289, r=petrochenkov
* 13314df21b0bb0cdd02c6760581d1b9f1052fa7e Rollup merge of #125572 - mu001999-contrib:dead/enhance, r=pnkfelix
There is an additional change stacked on top, which suppresses false-negatives that were masked by this work. I believe the functions that are touched in that code are legitimately unused functions and the types are not reachable since this `AnonPipe` type is not publically reachable -- please correct me if I'm wrong cc `@NobodyXu` who added these in ##127153.
Some of these reverts (#126315 and #126618) are only included because it makes the revert apply cleanly, and I think these changes were only done to fix follow-ups from the other PRs?
I apologize for the size of the PR and the churn that it has on the codebase (and for reverting `@mu001999's` work here), but I'm putting this PR up because I am concerned that we're making ad-hoc changes to fix bugs that are fallout of these PRs, and I'd like to see these changes reimplemented in a way that's more separable from the existing dead code pass. I am happy to review any code to reapply these changes in a more separable way.
cc `@mu001999`
r? `@pnkfelix`
Fixes #128272
Fixes #126169
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Formatting tweaks
Some small post-#125443 formatting tweaks.
r? ``@cuviper``
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Enable `std::io::copy` specialisation for `std::pipe::{PipeReader, PipeWriter}`
Enable `std::io::copy` specialisation on unix for the newly added anonymous pipe API, tracking issue rust-lang/rust#127154
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Add `#[must_use]` to some `into_raw*` functions.
cc #121287
r? ``@cuviper``
Adds `#[must_use = "losing the pointer will leak memory"]`[^1] to `Box::into_raw(_with_allocator)`, `Vec::into_raw_parts(_with_alloc)`, `String::into_raw_parts`[^2], and `rc::{Rc, Weak}::into_raw_with_allocator` (Rc's normal `into_raw` and all of `Arc`'s `into_raw*`s are already `must_use`).
Adds `#[must_use = "losing the raw <resource name may leak resources"]` to `IntoRawFd::into_raw_fd`, `IntoRawSocket::into_raw_socket`, and `IntoRawHandle::into_raw_handle`.
[^1]: "*will* leak memory" may be too-strong wording (since `Box`/`Vec`/`String`/`rc::Weak` might not have a backing allocation), but I left it as-is for simplicity and consistency.
[^2]: `String::into_raw_parts`'s `must_use` message is changed from the previous (possibly misleading) "`self` will be dropped if the result is not used".
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workingjubilee:you-dont-need-to-see-this-cpuid-move-along, r=Amanieu
Finish removing `has_cpuid`
The one use of it was guaranteed to be always true.
try-job: test-various
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[`macro_metavar_expr_concat`] Dogfooding
cc #124225
Starts inner usage to test the robustness of the implementation.
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The one use of it was guaranteed to be always true.
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`min`, `max`, and similar functions require external math routines. Add
these under the same gates as `std` math functions (`reliable_f16_math`
and `reliable_f128_math`).
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