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2023-08-18Fix UB in `std::sys::os::getenv()`ShE3py-27/+47
2023-08-18QNX: pass a truncated thread name to the OSJorge Aparicio-0/+4
The maximum length the thread name can have is `_NTO_THREAD_NAME_MAX`
2023-08-18Remove Drop impl of mpsc Receiver and (Sync)SenderBen Schulz-15/+0
2023-08-18resolve conflictsKyle Lin-0/+1
2023-08-18resolve conflictsKyle Lin-1/+1
2023-08-18lint linksKyle Lin-1/+1
2023-08-17Rollup merge of #114897 - joshtriplett:partial-revert-ok-0, r=m-ou-seJosh Stone-3/+3
Partially revert #107200 `Ok(0)` is indeed something the caller may interpret as an error, but that's the *correct* thing to return if the writer can't accept any more bytes.
2023-08-17Rollup merge of #114749 - gurry:issue-114722, r=thomccMatthias Krüger-3/+2
Update `mpsc::Sender` doc to reflect that it implements `Sync` Fixes #114722
2023-08-16Partially revert #107200Josh Triplett-3/+3
`Ok(0)` is indeed something the caller may interpret as an error, but that's the *correct* thing to return if the writer can't accept any more bytes.
2023-08-16address commentsGeorgii Rylov-11/+7
2023-08-16Fix a pthread_t handle leak #114610Georgii Rylov-0/+12
2023-08-16Rollup merge of #114861 - RalfJung:no-effect, r=wesleywiserMatthias Krüger-1/+1
fix typo: affect -> effect I just realized I made a silly typo when writing that comment...
2023-08-16Auto merge of #114689 - m-ou-se:stabilize-thread-local-cell-methods, r=thomccbors-18/+9
Stabilize thread local cell methods. Closes #92122.
2023-08-15Rollup merge of #114619 - g0djan:godjan/fix_#114608, r=m-ou-seMatthias Krüger-3/+3
Fix pthread_attr_union layout on Wasi Fixes https://github.com/rust-lang/rust/issues/114608 Ran the tests as described in https://github.com/rust-lang/rust/blob/master/src/doc/rustc/src/platform-support/wasm32-wasi-preview1-threads.md?plain=1#L125
2023-08-15Rollup merge of #114588 - ijackson:exit-status-default-2, r=m-ou-seMatthias Krüger-1/+10
Improve docs for impl Default for ExitStatus This addresses a review comment in #106425 (which is on the way to being merged I think). Some of the other followup work is more complicated so I'm going to do individual MRs. ~~Note this branch is on top of #106425~~
2023-08-15fix typo: affect -> effectRalf Jung-1/+1
2023-08-15Document Default for ExitStatusIan Jackson-1/+10
This lets us put a version on the impl, too.
2023-08-15Rollup merge of #114800 - RalfJung:transparent, r=cuviperGuillaume Gomez-14/+22
std: add some missing repr(transparent) For some types we don't want to stably guarantee this, so hide the `repr` from rustdoc. This nice approach was suggested by `@thomcc.`
2023-08-14Auto merge of #113658 - Dirreke:csky-unknown-linux-gunabiv2, r=bjorn3bors-0/+7
add a csky-unknown-linux-gnuabiv2 target This is the rustc side changes to support csky based Linux target(`csky-unknown-linux-gnuabiv2`). Tier 3 policy: > A tier 3 target must have a designated developer or developers (the "target maintainers") on record to be CCed when issues arise regarding the target. (The mechanism to track and CC such developers may evolve over time.) I pledge to do my best maintaining it. > Targets must use naming consistent with any existing targets; for instance, a target for the same CPU or OS as an existing Rust target should use the same name for that CPU or OS. Targets should normally use the same names and naming conventions as used elsewhere in the broader ecosystem beyond Rust (such as in other toolchains), unless they have a very good reason to diverge. Changing the name of a target can be highly disruptive, especially once the target reaches a higher tier, so getting the name right is important even for a tier 3 target. This `csky` section is the arch name and the `unknown-linux` section is the same as other linux target, and `gnuabiv2` is from the cross-compile toolchain of `gcc` > Target names should not introduce undue confusion or ambiguity unless absolutely necessary to maintain ecosystem compatibility. For example, if the name of the target makes people extremely likely to form incorrect beliefs about what it targets, the name should be changed or augmented to disambiguate it. I think the explanation in platform support doc is enough to make this aspect clear. > Tier 3 targets may have unusual requirements to build or use, but must not create legal issues or impose onerous legal terms for the Rust project or for Rust developers or users. It's using open source tools only. > The target must not introduce license incompatibilities. No new license > Anything added to the Rust repository must be under the standard Rust license (MIT OR Apache-2.0). Understood. > The target must not cause the Rust tools or libraries built for any other host (even when supporting cross-compilation to the target) to depend on any new dependency less permissive than the Rust licensing policy. This applies whether the dependency is a Rust crate that would require adding new license exceptions (as specified by the tidy tool in the rust-lang/rust repository), or whether the dependency is a native library or binary. In other words, the introduction of the target must not cause a user installing or running a version of Rust or the Rust tools to be subject to any new license requirements. There are no new dependencies/features required. > Compiling, linking, and emitting functional binaries, libraries, or other code for the target (whether hosted on the target itself or cross-compiling from another target) must not depend on proprietary (non-FOSS) libraries. Host tools built for the target itself may depend on the ordinary runtime libraries supplied by the platform and commonly used by other applications built for the target, but those libraries must not be required for code generation for the target; cross-compilation to the target must not require such libraries at all. For instance, rustc built for the target may depend on a common proprietary C runtime library or console output library, but must not depend on a proprietary code generation library or code optimization library. Rust's license permits such combinations, but the Rust project has no interest in maintaining such combinations within the scope of Rust itself, even at tier 3. As previously said it's using open source tools only. > "onerous" here is an intentionally subjective term. At a minimum, "onerous" legal/licensing terms include but are not limited to: non-disclosure requirements, non-compete requirements, contributor license agreements (CLAs) or equivalent, "non-commercial"/"research-only"/etc terms, requirements conditional on the employer or employment of any particular Rust developers, revocable terms, any requirements that create liability for the Rust project or its developers or users, or any requirements that adversely affect the livelihood or prospects of the Rust project or its developers or users. There are no such terms present/ > Neither this policy nor any decisions made regarding targets shall create any binding agreement or estoppel by any party. If any member of an approving Rust team serves as one of the maintainers of a target, or has any legal or employment requirement (explicit or implicit) that might affect their decisions regarding a target, they must recuse themselves from any approval decisions regarding the target's tier status, though they may otherwise participate in discussions. I'm not the reviewer here. > This requirement does not prevent part or all of this policy from being cited in an explicit contract or work agreement (e.g. to implement or maintain support for a target). This requirement exists to ensure that a developer or team responsible for reviewing and approving a target does not face any legal threats or obligations that would prevent them from freely exercising their judgment in such approval, even if such judgment involves subjective matters or goes beyond the letter of these requirements. I'm not the reviewer here. > Tier 3 targets should attempt to implement as much of the standard libraries as possible and appropriate (core for most targets, alloc for targets that can support dynamic memory allocation, std for targets with an operating system or equivalent layer of system-provided functionality), but may leave some code unimplemented (either unavailable or stubbed out as appropriate), whether because the target makes it impossible to implement or challenging to implement. The authors of pull requests are not obligated to avoid calling any portions of the standard library on the basis of a tier 3 target not implementing those portions. It supports for std > The target must provide documentation for the Rust community explaining how to build for the target, using cross-compilation if possible. If the target supports running binaries, or running tests (even if they do not pass), the documentation must explain how to run such binaries or tests for the target, using emulation if possible or dedicated hardware if necessary. I have added the documentation, and I think it's clear. > Tier 3 targets must not impose burden on the authors of pull requests, or other developers in the community, to maintain the target. In particular, do not post comments (automated or manual) on a PR that derail or suggest a block on the PR based on a tier 3 target. Do not send automated messages or notifications (via any medium, including via `@)` to a PR author or others involved with a PR regarding a tier 3 target, unless they have opted into such messages. Understood. > Backlinks such as those generated by the issue/PR tracker when linking to an issue or PR are not considered a violation of this policy, within reason. However, such messages (even on a separate repository) must not generate notifications to anyone involved with a PR who has not requested such notifications. Understood. > Patches adding or updating tier 3 targets must not break any existing tier 2 or tier 1 target, and must not knowingly break another tier 3 target without approval of either the compiler team or the maintainers of the other tier 3 target. I believe I didn't break any other target. > In particular, this may come up when working on closely related targets, such as variations of the same architecture with different features. Avoid introducing unconditional uses of features that another variation of the target may not have; use conditional compilation or runtime detection, as appropriate, to let each target run code supported by that target. I think there are no such problems in this PR.
2023-08-14actually this doesn't even affect doctests. nice.Ralf Jung-18/+9
2023-08-14add a csky-unknown-linux-gnuabiv2 targetDirreke-0/+7
2023-08-14reference-counting analogyRalf Jung-20/+23
2023-08-14reword the paragraph on file description ownershipRalf Jung-9/+10
2023-08-14don't link to RFCs, they are not up-to-date docsRalf Jung-2/+1
2023-08-14std: add some missing repr(transparent)Ralf Jung-2/+19
2023-08-14mention /proc/self/fd with /proc/self/memRalf Jung-3/+3
2023-08-14wording; and explain some of the possible consequences of violating io-safetyRalf Jung-3/+9
2023-08-14typosRalf Jung-2/+2
2023-08-14sync the various FromRawFd trait docs, and remove 'valid'Ralf Jung-21/+32
2023-08-13core/any: remove Provider traitwayne warren-9/+9
* remove `impl Provider for Error` * rename `Demand` to `Request` * update docstrings to focus on the conceptual API provided by `Request` * move `core::any::{request_ref, request_value}` functions into `core::error` * move `core::any::tag`, `core::any::Request`, an `core::any::TaggedOption` into `core::error` * replace `provide_any` feature name w/ `error_generic_member_access` * move `core::error::request_{ref,value} tests into core::tests::error module * update unit and doc tests
2023-08-13add more explicit I/O safety documentationRalf Jung-10/+57
2023-08-12Rollup merge of #114132 - tamird:better-env-debug-impls, r=AmanieuMatthias Krüger-12/+256
Better Debug for Vars and VarsOs Display actual vars instead of two dots. The same was done for Args and ArgsOs in 275f9a04af6191e3aee3852a5a1713.
2023-08-12Name what ln_gamma doesJubilee Young-2/+6
The previous description omitted some important details.
2023-08-12Remove unnecessary feature gatesJacob Pratt-1/+0
2023-08-12Update Sender documentation for SyncGurinder Singh-3/+2
2023-08-11Auto merge of #113432 - klensy:ms-cut-backtrace, r=ChrisDentonbors-1/+7
reduce deps for windows-msvc targets for backtrace (eventually) mirrors https://github.com/rust-lang/backtrace-rs/pull/543 Some dependencies of backtrace don't used on windows-msvc targets, so exclude them: miniz_oxide (+ adler) addr2line (+ gimli) object (+ memchr) This saves about 30kb of std.dll + 17.5mb of rlibs
2023-08-10Rollup merge of #114359 - ttsugriy:barrier-simpl, r=cuviperMichael Goulet-5/+2
[library/std] Replace condv while loop with `cvar.wait_while`. `wait_while` takes care of spurious wake-ups in centralized place, reducing chances for mistakes and potential future optimizations (who knows, maybe in future there will be no spurious wake-ups? :)
2023-08-10Rollup merge of #114194 - thomcc:flushinline, r=cuviperMichael Goulet-0/+13
Inline trivial (noop) flush calls At work I noticed that `writer.flush()?` didn't get optimized away in cases where the flush is obviously a no-op, which I had expected (well, desired). I went through and added `#[inline]` to a bunch of cases that were obviously noops, or delegated to ones that were obviously noops. I omitted platforms I don't have access to (some tier3). I didn't do this very scientifically, in cases where it was non-obvious I left `#[inline]` off.
2023-08-10Stabilize thread local cell methods.Mara Bos-18/+9
2023-08-09Auto merge of #114646 - matthiaskrgr:rollup-xf7qnmn, r=matthiaskrgrbors-90/+156
Rollup of 6 pull requests Successful merges: - #113939 (open pidfd in child process and send to the parent via SOCK_SEQPACKET+CMSG) - #114548 (Migrate a trait selection error to use diagnostic translation) - #114606 (fix: not insert missing lifetime for `ConstParamTy`) - #114634 (Mention riscv64-linux-android support in Android documentation) - #114638 (Remove old RPITIT tests (revisions were removed)) - #114641 (Rename copying `ascii::Char` methods from `as_` to `to_`) r? `@ghost` `@rustbot` modify labels: rollup
2023-08-09Rollup merge of #113939 - the8472:pidfd-from-child, r=Mark-SimulacrumMatthias Krüger-90/+156
open pidfd in child process and send to the parent via SOCK_SEQPACKET+CMSG This avoids using `clone3` when a pidfd is requested while still getting it in a 100% race-free manner by passing it up from the child process. This should solve most concerns in #82971
2023-08-09Auto merge of #99747 - ankane:float_gamma, r=workingjubileebors-1/+158
Add gamma function to f32 and f64 Adds the [gamma function](https://en.wikipedia.org/wiki/Gamma_function) to `f32` and `f64` (`tgamma` and `tgammaf` from C). Refs: - https://github.com/rust-lang/rfcs/issues/864 - https://github.com/rust-lang/rust/issues/18271
2023-08-08open pidfd in child process and send to the parent via SOCK_SEQPACKET+CMSGThe 8472-90/+156
This is a 100% race-free way to obtain a child's pidfd while avoiding `clone3`.
2023-08-08Rollup merge of #106425 - ijackson:exit-status-default, r=dtolnayMatthias Krüger-24/+25
Make ExitStatus implement Default And, necessarily, make it inhabited even on platforms without processes. I noticed while preparing https://github.com/rust-lang/rfcs/pull/3362 that there was no way for anyone to construct an `ExitStatus`. This would be insta-stable so needs an FCP.
2023-08-08Fix #114608Georgii Rylov-3/+3
2023-08-07Increase clarity about Hash - Eq consistency in HashMap and HashSet docsEasyoakland-5/+8
2023-08-07std: synchronize with all calls to `unpark` in id-based thread parkerjoboet-11/+6
2023-08-07Better Debug for Vars and VarsOsTamir Duberstein-12/+256
Display actual vars instead of two dots. The same was done for Args and ArgsOs in 275f9a04af6191e3aee3852a5a1713.
2023-08-07impl Default for ExitCodeIan Jackson-0/+8
As suggested here https://github.com/rust-lang/rust/pull/106425#issuecomment-1382952598
2023-08-07Adjust the duration_since(UNIX_EPOCH) docsIan Jackson-8/+6
* Make the description primary, not the definition in terms of time_t * Remove the list of Internet protocols As per https://github.com/rust-lang/rust/pull/109660#pullrequestreview-1414613118