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Turn duration consts into associated consts
As suggested in https://github.com/rust-lang/rust/issues/57391#issuecomment-459658236, I'm moving `Duration` constants (`SECOND`, `MILLISECOND` and so on; currently behind unstable `duration_constants` feature) into the `impl Duration` block.
cc @frewsxcv @SimonSapin
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SGX target: fix panic = abort
What is the difference between `no_mangle` and `rustc_std_internal_symbol`?
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Make std feature list sorted
This helps to avoid merge conflicts when concurrent PRs append features to the end of the list.
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deprecate before_exec in favor of unsafe pre_exec
Fixes https://github.com/rust-lang/rust/issues/39575
As per the [lang team decision](https://github.com/rust-lang/rust/issues/39575#issuecomment-442993358):
> The language team agreed that before_exec should be unsafe, and leaves the details of a transition plan to the libs team.
Cc @alexcrichton @rust-lang/libs how would you like to proceed?
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This helps to avoid merge conflicts when concurrent PRs append
features to the end of the list.
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Use more impl header lifetime elision
Inspired by seeing explicit lifetimes on these two:
- https://doc.rust-lang.org/nightly/std/slice/struct.Iter.html#impl-FusedIterator
- https://doc.rust-lang.org/nightly/std/primitive.u32.html#impl-Not
And a follow-up to https://github.com/rust-lang/rust/pull/54687, that started using IHLE in libcore.
Most of the changes in here fall into two big categories:
- Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop`, `Debug`, and `Clone`)
- Forwarding impls that are only possible because the lifetime doesn't matter (like `impl<R: Read + ?Sized> Read for &mut R`)
I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations [where the flipped one cannot elide the lifetime](https://internals.rust-lang.org/t/impl-type-parameter-aliases/9403/2?u=scottmcm).
I also removed two lifetimes that turned out to be completely unused; see https://github.com/rust-lang/rust/issues/41960#issuecomment-464557423
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Explain a panic in test case net::tcp::tests::double_bind
Those who try to build libstd on the Windows Subsystem for Linux experience a single failing test, where the point of failure is an explicit but anonymous panic, as reported in https://github.com/rust-lang/rust/issues/49367
This commit somewhat explains why and allows diagnosing a little.
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Add alias methods to PathBuf for underlying OsString (#58234)
Implemented the following methods on PathBuf which forward to the underlying OsString.
- capacity
- with_capacity
- clear
- reserve
- reserve_exact
- shrink_to_fit
- shrink_to
These methods have been documented with reference to the original docs for `OsString`. @Mark-Simulacrum please let me know if you feel this does not suffice.
Further, I've not yet included tests for these definitions - please advise on how comprehensive tests need to be for methods such as these that simply alias other (already tested) methods.
(This PR addresses issue #58234)
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Monomorphize less code in fs::{read|write}
Since the generic-ness is only for the as_refs, might as well have std just compile the important part once instead of on every use.
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Use less explicit shifting in std::net::ip
Now that we have `{to|from}_be_bytes` the code can be simpler.
(Inspired by PR #57740)
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There are two big categories of changes in here
- Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop` & `Debug`)
- Forwarding impls that are only possible because the lifetime doesn't matter (like `impl<R: Read + ?Sized> Read for &mut R`)
I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations where the flipped one cannot elide the lifetime.
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update stdsimd and remove now-unused MaybeUninit::into_inner
That's a huge diff for stdsimd... Cc @gnzlbg @alexcrichton
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Feature gate changed to `path_buf_capacity` as per advice from @Mark-Simulacrum
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- Fixed incorrect `mut` usage
- Fixed style in accordance with tidy
- Marked all methods as unstable
- Changed feature identifier to path_buf_alias_os_string_methods
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Implemented the following methods on PathBuf which
forward to the underlying OsString.
- capacity
- with_capacity
- clear
- reserve
- reserve_exact
- shrink_to_fit
- shrink_to
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Since the generic-ness is only for the as_refs, might as well have std just compile the important part once instead of on every use.
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Fix tracking issue for error iterators
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Fix documentation for std::path::PathBuf::pop
Closes #58474.
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Instant::checked_duration_since
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r=alexcrichton
Use posix_spawn_file_actions_addchdir_np when possible
This is a non-POSIX extension implemented in Solaris and in glibc 2.29.
With this we can still use `posix_spawn()` when `Command::current_dir()`
has been set, otherwise we fallback to `fork(); chdir(); exec()`.
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Closes #58474.
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Update the future/task API
This change updates the future and task API as discussed in the stabilization RFC at https://github.com/rust-lang/rfcs/pull/2592.
Changes:
- Replacing UnsafeWake with RawWaker and RawWakerVtable
- Removal of LocalWaker
- Removal of Arc-based Wake trait
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Convert old first edition links to current edition one
r? @steveklabnik
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This is a non-POSIX extension implemented in Solaris and in glibc 2.29.
With this we can still use `posix_spawn()` when `Command::current_dir()`
has been set, otherwise we fallback to `fork(); chdir(); exec()`.
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Use footnote style to bypass the tidy check
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SGX target: simplify usercall internals
This moves logic from assembly to Rust and removes the special case for exit/panic handling, merging it with regular usercall handling.
Also, this fixes a bug in the exit usercall introduced in a75ae00. The bug would make regular exits look like panics with high probability. It would also with some probability leak information through uncleared registers.
cc @VardhanThigle
r? @alexcrichton
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impl iter() for dyn Error
Examples:
```rust
let next_error_type_a = err
.iter()
.filter_map(Error::downcast_ref::<ErrorTypeA>)
.next();
```
```rust
let source_root_error = err.iter().last();
```
Credit for the ErrorIter goes to reddit user /u/tdiekmann (Tim Diekmann)
https://www.reddit.com/r/rust/comments/aj3lpg/is_an_iterator_impl_over_errorsource_possible/
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Stabilize the time_checked_add feature
Closes #55940
Stabilizes `checked_add` and `checked_sub` on `Instant` and `SystemTime`.
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Doc rewording
None
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Cosmetic improvements to doc comments
This has been factored out from https://github.com/rust-lang/rust/pull/58036 to only include changes to documentation comments (throughout the rustc codebase).
r? @steveklabnik
Once you're happy with this, maybe we could get it through with r=1, so it doesn't constantly get invalidated? (I'm not sure this will be an issue, but just in case...) Anyway, thanks for your advice so far!
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Require a list of features in `#[allow_internal_unstable]`
The blanket-permission slip is not great and will likely give us trouble some point down the road.
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Now that we have {to|from}_be_bytes the code can be simpler.
(Inspired by PR #57740)
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https://github.com/rust-lang/rust/issues/47238
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