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resolve: Do not finalize shadowed bindings
I.e. do not mark them as used, or non-speculatively loaded, or similar.
Previously they were sometimes finalized during early resolution, causing issues like https://github.com/rust-lang/rust/pull/144793#issuecomment-3168108005.
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I.e. do not mark them as used, or non-speculative loaded, or similar.
Previously they were sometimes finalized during early resolution, causing issues like https://github.com/rust-lang/rust/pull/144793#issuecomment-3168108005.
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Vec::try_remove is a non-panicking version of Vec::remove
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Since PeekMut implements Deref, it shouldn't have any methods of its
own.
See also: `std::collections::binary_heap::PeekMut::pop`
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Stabilize BTree{Map,Set}::extract_if
Tracking issue: rust-lang/rust#70530
FCP completed: https://github.com/rust-lang/rust/issues/70530#issuecomment-3191454465
Closes: rust-lang/rust#70530
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Constify conversion traits (part 1)
This is the first part of rust-lang/rust#144289 being split into smaller pieces. It adds/moves constness of several traits under the `const_convert` feature:
* `From`
* `Into`
* `TryFrom`
* `TryInto`
* `FromStr`
* `AsRef`
* `AsMut`
* `Borrow`
* `BorrowMut`
* `Deref`
* `DerefMut`
There are a few methods that are intrinsically tied to these traits which I've included in the feature. Particularly, those which are wrappers over `AsRef`:
* `ByteStr::new` (unstable under `bstr` feature)
* `OsStr::new`
* `Path::new`
Those which directly use `Into`:
* `Result::into_ok`
* `Result::into_err`
And those which use `Deref` and `DerefMut`:
* `Pin::as_ref`
* `Pin::as_mut`
* `Pin::as_deref_mut`
* `Option::as_deref`
* `Option::as_deref_mut`
* `Result::as_deref`
* `Result::as_deref_mut`
(note: the `Option` and `Result` methods were suggested by ``@npmccallum`` initially as rust-lang/rust#146101)
The parts which are missing from this PR are:
* Anything that involves heap-allocated types
* Making any method const than the ones listed above
* Anything that could rely on the above, *or* could rely on system-specific code for `OsStr` or `Path` (note: this mostly makes these methods useless since `str` doesn't implement `AsRef<OsStr>` yet, but it's better to track the method for now and add impls later, IMHO)
r? ``@tgross35`` (who mostly already reviewed this)
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str: Stabilize `round_char_boundary` feature
Closes https://github.com/rust-lang/rust/issues/93743
FCP completed https://github.com/rust-lang/rust/issues/93743#issuecomment-3168382171
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vec_deque/fmt/vec tests: remove static mut
More rust-lang/rust#125035.
r? ```@tgross35```
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r=tgross35
Use a distinct `ToString` implementation for `u128` and `i128`
Part of https://github.com/rust-lang/rust/issues/135543.
Follow-up of rust-lang/rust#136264.
When working on https://github.com/rust-lang/rust/pull/142098, I realized that `i128` and `u128` could also benefit from a distinct `ToString` implementation so here it.
The last commit is just me realizing that I forgot to add the format tests for `usize` and `isize`.
Here is the bench comparison:
| bench name | last nightly | with this PR | diff |
|-|-|-|-|
| bench_i128 | 29.25 ns/iter (+/- 0.66) | 17.52 ns/iter (+/- 0.7) | -40.1% |
| bench_u128 | 34.06 ns/iter (+/- 0.21) | 16.1 ns/iter (+/- 0.6) | -52.7% |
I used this code to test:
```rust
#![feature(test)]
extern crate test;
use test::{Bencher, black_box};
#[inline(always)]
fn convert_to_string<T: ToString>(n: T) -> String {
n.to_string()
}
macro_rules! decl_benches {
($($name:ident: $ty:ident,)+) => {
$(
#[bench]
fn $name(c: &mut Bencher) {
c.iter(|| convert_to_string(black_box({ let nb: $ty = 20; nb })));
}
)+
}
}
decl_benches! {
bench_u128: u128,
bench_i128: i128,
}
```
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add Vec::peek_mut
Tracking issue: rust-lang/rust#122742
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Added `Clone` implementation for `ChunkBy`
Added `Clone` implementation for `ChunkBy`
Closes rust-lang/rust#137969.
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Tracking issue: #140667
Signed-off-by: Vladimir Krivopalov <vladimir.krivopalov@gmail.com>
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Replace last `usize` -> `ptr` transmute in `alloc` with strict provenance API
This replaces the `usize -> ptr` transmute in `RawVecInner::new_in` with a strict provenance API (`NonNull::without_provenance`).
The API is changed to take an `Alignment` which encodes the non-null constraint needed for `Unique` and allows us to do the construction safely.
Two internal-only APIs were added to let us avoid UB-checking in this hot code: `Layout::alignment` to get the `Alignment` type directly rather than as a `usize`, and `Unique::from_non_null` to create `Unique` in const context without a transmute.
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Add integer to string formatting tests
As discussed in https://github.com/rust-lang/rust/pull/136264, there doesn't seem to have tests to ensure that int to string conversion is performed correctly, only sporadic tests here and there. Now we have some basic tests. :)
r? `````@Mark-Simulacrum`````
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Removes some unsafety and reduces the number of `usize` -> `ptr`
transmutes which might be helpful for CHERI-like targets in the future.
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Encodes the safety constraint that `Unique`'s pointer must be non-zero
into the API.
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For the tests that make use of internal implementation details, we
include the module to test using #[path] in alloctests now.
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