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Extending `std` to get the last error number for HermitOS.
HermitOS is a tier 3 platform and this PR changes only files,
wich are related to the tier 3 platform.
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janstarke:handle-missing-creation-time-as-unsupported, r=cuviper
handle unavailable creation time as `io::ErrorKind::Unsupported`
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Add `display` method to `OsStr`
Add `display` method to `OsStr` for lossy display of an `OsStr` which may contain invalid unicode.
Invalid Unicode sequences are replaced with `U+FFFD REPLACEMENT CHARACTER`.
This change also makes the `std::ffi::os_str` module public (see https://github.com/rust-lang/libs-team/issues/326#issuecomment-1894160023).
- ACP: https://github.com/rust-lang/libs-team/issues/326
- Tracking issue: #120048
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Add a new `wasm32-wasi-preview2` target
This is the initial implementation of the MCP https://github.com/rust-lang/compiler-team/issues/694 creating a new tier 3 target `wasm32-wasi-preview2`. That MCP has been seconded and will most likely be approved in a little over a week from now. For more information on the need for this target, please read the [MCP](https://github.com/rust-lang/compiler-team/issues/694).
There is one aspect of this PR that will become insta-stable once these changes reach a stable compiler:
* A new `target_family` named `wasi` is introduced. This target family incorporates all wasi targets including `wasm32-wasi` and its derivative `wasm32-wasi-preview1-threads`. The difference between `target_family = wasi` and `target_os = wasi` will become much clearer when `wasm32-wasi` is renamed to `wasm32-wasi-preview1` and the `target_os` becomes `wasm32-wasi-preview1`. You can read about this target rename in [this MCP](https://github.com/rust-lang/compiler-team/issues/695) which has also been seconded and will hopefully be officially approved soon.
Additional technical details include:
* Both `std::sys::wasi_preview2` and `std::os::wasi_preview2` have been created and mostly use `#[path]` annotations on their submodules to reach into the existing `wasi` (soon to be `wasi_preview1`) modules. Over time the differences between `wasi_preview1` and `wasi_preview2` will grow and most like all `#[path]` based module aliases will fall away.
* Building `wasi-preview2` relies on a [`wasi-sdk`](https://github.com/WebAssembly/wasi-sdk) in the same way that `wasi-preview1` does (one must include a `wasi-root` path in the `Config.toml` pointing to sysroot included in the wasi-sdk). The target should build against [wasi-sdk v21](https://github.com/WebAssembly/wasi-sdk/releases/tag/wasi-sdk-21) without modifications. However, the wasi-sdk itself is growing [preview2 support](https://github.com/WebAssembly/wasi-sdk/pull/370) so this might shift rapidly. We will be following along quickly to make sure that building the target remains possible as the wasi-sdk changes.
* This requires a [patch to libc](https://github.com/rylev/rust-libc/tree/wasm32-wasi-preview2) that we'll need to land in conjunction with this change. Until that patch lands the target won't actually build.
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os::net: expanding TcpStreamExt for Linux with `tcp_deferaccept`.
allows for socket to process only when there is data to process, the option sets a number of seconds until the data is ready.
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Signed-off-by: Ryan Levick <me@ryanlevick.com>
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Signed-off-by: Ryan Levick <me@ryanlevick.com>
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Rollup of 4 pull requests
Successful merges:
- #121598 (rename 'try' intrinsic to 'catch_unwind')
- #121639 (Update books)
- #121648 (Update Vec and String `{from,into}_raw_parts`-family docs)
- #121651 (Properly emit `expected ;` on `#[attr] expr`)
r? `@ghost`
`@rustbot` modify labels: rollup
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rename 'try' intrinsic to 'catch_unwind'
The intrinsic has nothing to do with `try` blocks, and corresponds to the stable `catch_unwind` function, so this makes a lot more sense IMO.
Also rename Miri's special function while we are at it, to reflect the level of abstraction it works on: it's an unwinding mechanism, on which Rust implements panics.
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remove platform-intrinsics ABI; make SIMD intrinsics be regular intrinsics
`@Amanieu` `@workingjubilee` I don't think there is any reason these need to be "special"? The [original RFC](https://rust-lang.github.io/rfcs/1199-simd-infrastructure.html) indicated eventually making them stable, but I think that is no longer the plan, so seems to me like we can clean this up a bit.
Blocked on https://github.com/rust-lang/stdarch/pull/1538, https://github.com/rust-lang/rust/pull/121542.
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Always use WaitOnAddress on Win10+
`WaitOnAddress` and `WakeByAddressSingle` are always available since Windows 8 so they can now be used without needing to delay load. I've also moved the Windows 7 thread parking fallbacks into a separate sub-module.
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Rollup of 9 pull requests
Successful merges:
- #119590 (Stabilize `cfg_target_abi`)
- #120805 (make non-PartialEq-typed consts as patterns a hard error)
- #121060 (Add newtypes for bool fields/params/return types)
- #121284 (Add test cases for inlining compiler-private items)
- #121324 (pattern_analysis: factor out unspecialization)
- #121409 (Prevent cycle in implied predicates computation)
- #121513 (Fix sgx unit test compilation)
- #121570 (Make most bootstrap step types !Copy)
- #121586 (Don't use `unwrap()` in `ArrayIntoIter` lint when typeck fails)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix sgx unit test compilation
Fixes a compilation error:
```
error[E0583]: file not found for module `tests`
--> library/std/src/sys/locks/rwlock/sgx.rs:2:1
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2 | mod tests;
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= help: to create the module `tests`, create file "library/std/src/sys/locks/rwlock/sgx/tests.rs" or "library/std/src/sys/locks/rwlock/sgx/tests/mod.rs"
= note: if there is a `mod tests` elsewhere in the crate already, import it with `use crate::...` instead
For more information about this error, try `rustc --explain E0583`.
error: could not compile `std` (lib test) due to 1 previous error`
```
When running command:
```
`TF_BUILD=True RUST_TEST_THREADS=1 ./x.py test --stage 1 "library/std" tests/assembly tests/run-make --target=x86_64-fortanix-unknown-sgx --no-doc --exclude src/tools/linkchecker --exclude src/tools/rust-demangler --no-fail-fast 2>&1
```
The fix is done by moving a file to the location suggested by the compiler.
The issue was introduced by PR: https://github.com/rust-lang/rust/pull/121177
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Implement `MappedMutexGuard`, `MappedRwLockReadGuard`, and `MappedRwLockWriteGuard`.
ACP: https://github.com/rust-lang/libs-team/issues/260
Tracking issue: https://github.com/rust-lang/rust/issues/117108
<details> <summary> (Outdated) </summary>
`MutexState`/`RwLockState` structs
~~Having `sys::(Mutex|RwLock)` and `poison::Flag` as separate fields in the `Mutex`/`RwLock` would require `MappedMutexGuard`/`MappedRwLockWriteGuard` to hold an additional pointer, so I combined the two fields into a `MutexState`/`RwLockState` struct. This should not noticeably affect perf or layout, but requires an additional field projection when accessing the former `.inner` or `.poison` fields (now `.state.inner` and `.state.poison`).~~ If this is not desired, then `MappedMutexGuard`/`MappedRwLockWriteGuard` can instead hold separate pointers to the two fields.
</details>
The doc-comments are mostly copied from the existing `*Guard` doc-comments, with some parts from `lock_api::Mapped*Guard`'s doc-comments.
Unresolved question: Are more tests needed?
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Use `addr_of!`
As per https://github.com/rust-lang/rust/pull/121303#discussion_r1500954662
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Fix incorrect doc of ScopedJoinHandle::is_finished
Fixes the explanation how to use `is_finished` to achieve a non-blocking join. The updated version matches the documentation of the non-scoped JoinHandle::is_finished.
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Co-authored-by: Amanieu d'Antras <amanieu@gmail.com>
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Fixes the explanation how to use is_finished to achieve a non-blocking
join. The updated version matches the documentation of the non-scoped
JoinHandle::is_finished.
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Make `Barrier::new()` const
I guess this was just missed in #97791?
`@rustbot` label T-libs-api -T-libs
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Get rid of some `#![allow(static_mut_refs)]`
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Rollup of 6 pull requests
Successful merges:
- #120742 (mark `min_exhaustive_patterns` as complete)
- #121470 (Don't ICE on anonymous struct in enum variant)
- #121492 (coverage: Rename `is_closure` to `is_hole`)
- #121495 (remove repetitive words)
- #121498 (Make QNX/NTO specific "timespec capping" public to crate::sys)
- #121510 (lint-overflowing-ops: unify cases and remove redundancy)
r? `@ghost`
`@rustbot` modify labels: rollup
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Use generic `NonZero` everywhere in `library`.
Tracking issue: https://github.com/rust-lang/rust/issues/120257
Use generic `NonZero` everywhere (except stable examples).
r? `@dtolnay`
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It is used in:
- `library/std/src/sys/locks/condvar/pthread.rs`
- `library/std/src/sys/pal/unix/thread_parking/pthread.rs`
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Help with common API confusion, like asking for `push` when the data structure really has `append`.
```
error[E0599]: no method named `size` found for struct `Vec<{integer}>` in the current scope
--> $DIR/rustc_confusables_std_cases.rs:17:7
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LL | x.size();
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help: you might have meant to use `len`
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LL | x.len();
| ~~~
help: there is a method with a similar name
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LL | x.resize();
| ~~~~~~
```
#59450
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Improve UEFI stdio
Fixed some things suggested in last PR: #116207
cc `@dvdhrm`
cc `@nicholasbishop`
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