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The acronym is not descriptive unless one has seen it before.
* Rename the `oom` function to `handle_alloc_error`. It was **stabilized in 1.28**, so if we do this at all we need to land it this cycle.
* Rename `set_oom_hook` to `set_alloc_error_hook`
* Rename `take_oom_hook` to `take_alloc_error_hook`
Bikeshed: `alloc` v.s. `allocator`, `error` v.s. `failure`
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Stabilize #[repr(transparent)]
Tracking issue FCP: https://github.com/rust-lang/rust/issues/43036#issuecomment-394094318
Reference PR: https://github.com/rust-lang-nursery/reference/pull/353
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Tracking issue FCP: https://github.com/rust-lang/rust/issues/43036#issuecomment-394094318
Reference PR: https://github.com/rust-lang-nursery/reference/pull/353
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Stabilize GlobalAlloc and #[global_allocator]
This PR implements the changes discussed in https://github.com/rust-lang/rust/issues/49668#issuecomment-393263510
Fixes #49668
Fixes #27389
This does not change the default global allocator: #36963
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Add some docs where they were missing,
attempt to fix them where they were out of date.
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The heap.rs file was already unused.
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[futures] add a few blanket impls to std
these were defined in the futures crate, but with the core definitions moving to std these would need to move too.
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Stabilize Iterator::step_by
Fixes #27741
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Add Future and task system to the standard library
This adds preliminary versions of the `std::future` and `std::task` modules in order to unblock development of async/await (https://github.com/rust-lang/rust/issues/50547). These shouldn't be considered as final forms of these libraries-- design questions about the libraries should be left on https://github.com/rust-lang/rfcs/pull/2418. Once that RFC (or a successor) is merged, these APIs will be adjusted as necessary.
r? @aturon
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Fixes #27741
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Clarify the difference between get_mut and into_mut for OccupiedEntry
The examples for both hash_map::OccupiedEntry::get_mut and
hash_map::OccupiedEntry::into_mut were almost identical. This led to some
confusion over the difference, namely why you would ever use get_mut when
into_mut gives alonger lifetime. Reddit thread:
https://www.reddit.com/r/rust/comments/8a5swr/why_does_hashmaps
This commit adds two lines and a comment to the example, to show that the
entry object can be re-used after calling get_mut.
Closes https://github.com/rust-lang/rust/issues/49745
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impl Default for &mut str
Rationale: There is already `impl Default for &mut [T]`.
Note: This impl is insta-stable.
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Stabilize SliceIndex trait.
CC #35729
According to recommendations in
https://github.com/rust-lang/rust/issues/35729#issuecomment-377784884
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further reduce unsafe fn calls
reduce right drift
assert! sufficient capacity
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old tests cover the new fast path of str joining already
this adds tests for joining into Strings with long separators (>4 byte) and
for joining into Vec<T>, T: Clone + !Copy. Vec<T: Copy> will be
specialised when specialisation type inference bugs are fixed.
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for both Vec<T> and String
- eliminates the boolean first flag in fn join()
for String only
- eliminates repeated bounds checks in join(), concat()
- adds fast paths for small string separators up to a len of 4 bytes
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Fixes #35729
According to recommendations in
https://github.com/rust-lang/rust/issues/35729#issuecomment-377784884
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This avoids an `unsafe` block in each case.
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We only need to implement it for `Any + Send + Sync` because in practice
that's the only useful combination for `Arc` and `Any`.
Implementation for #44608 under the `rc_downcast` feature.
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As discussed in
https://github.com/rust-lang/rust/issues/49668#issuecomment-384893456
and subsequent, there are use-cases where the OOM handler needs to know
the size of the allocation that failed. The alignment might also be a
cause for allocation failure, so providing it as well can be useful.
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Rollup of 11 pull requests
Successful merges:
- #50987 (Underline multiple suggested replacements in the same line)
- #51014 (Add documentation about env! second argument)
- #51034 (Remove unused lowering field and method)
- #51047 (Use AllFacts from polonius-engine)
- #51048 (Add more missing examples for Formatter)
- #51056 (Mention and use `Once::new` instead of `ONCE_INIT`)
- #51059 (What does an expression look like, that consists only of special characters?)
- #51065 (Update nomicon link in transmute docs)
- #51067 (Add inner links in documentation)
- #51070 (Fail typecheck if we encounter a bogus break)
- #51073 (Rename TokenStream::empty to TokenStream::new)
Failed merges:
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Add inner links in documentation
From [this SO question](https://stackoverflow.com/q/50518757/2733851) it looks like this page isn't really clear.
I personally do think this page is quite clear, the only think I could think of was adding some references.
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std: Ensure OOM is classified as `nounwind`
OOM can't unwind today, and historically it's been optimized as if it can't
unwind. This accidentally regressed with recent changes to the OOM handler, so
this commit adds in a codegen test to assert that everything gets optimized away
after the OOM function is approrpiately classified as nounwind
Closes #50925
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stabilize RangeBounds collections_range #30877
The FCP for #30877 closed last month, with the decision to:
1. move from `collections::range::RangeArgument` to `ops::RangeBounds`, and
2. rename `start()` and `end()` to `start_bounds()` and `end_bounds()`.
Simon Sapin already moved it to `ops::RangeBounds` in #49163.
I renamed the functions, and removed the old `collections::range::RangeArgument` alias.
This is my first Rust PR, please let me know if I can improve anything. This passes all tests for me, except the `clippy` tool (which uses `RangeArgument::start()`).
I considered deprecating `start()` and `end()` instead of removing them, but the contribution guidelines indicate we can break `clippy` temporarily. I thought it was best to remove the functions, since we're worried about name collisions with `Range::start` and `end`.
Closes #30877.
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From [this SO question](https://stackoverflow.com/q/50518757/2733851) it looks like this page isn't really clear.
I personally do think this page is quite clear, the only think I could think of was adding some references.
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OOM can't unwind today, and historically it's been optimized as if it can't
unwind. This accidentally regressed with recent changes to the OOM handler, so
this commit adds in a codegen test to assert that everything gets optimized away
after the OOM function is approrpiately classified as nounwind
Closes #50925
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rename RangeBounds::start() -> start_bound()
rename RangeBounds::end() -> end_bound()
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Stabilize feature from_ref
Function `from_ref_mut` is now renamed to `from_mut`, as discussed in #45703.
Closes #45703.
r? @SimonSapin
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Escape combining characters in char::Debug
Although combining characters are technically printable, they make little sense to print on their own with `Debug`: it'd be better to escape them like non-printable characters.
This is a breaking change, but I imagine the fact `escape_debug` is rare and almost certainly primarily used for debugging that this is an acceptable change.
Resolves #41922.
r? @alexcrichton
cc @clarcharr
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