Rollup of 7 pull requests
Successful merges:
- #69425 (add fn make_contiguous to VecDeque)
- #69458 (improve folder name for persistent doc tests)
- #70268 (Document ThreadSanitizer in unstable-book)
- #70600 (Ensure there are versions of test code for aarch64 windows)
- #70606 (Clean up E0466 explanation)
- #70614 (remove unnecessary relocation check in const_prop)
- #70623 (Fix broken link in README)
Failed merges:
r? @ghost
While for auto, try and PR builds we only want the latest commit to be
tested, that's not true for try builds: each commit pushed to the branch
is a different PR being tested, and we want multiple PRs to be tested in
parallel if there is enough demand.
Fixes#70569
Ensure there are versions of test code for aarch64 windows
Remove the `cfg` flags that were preventing some tests from running on `aarch64-pc-windows-msvc`.
All the existing `target_os = windows` targets had the same `align()` and `size()` values, so this change just removes the `target_arch` flags.
r? @alexcrichton
improve folder name for persistent doc tests
This fixes#69411, by using the entire path as folder name and storing already visited paths in a HashMap + appending a number to the file name for duplicates.
The current webrender commit occasionally fails without a reason, and
the latest webrender commit is missing a dependency on our Windows
builders. It's not worth installing an extra dependency for cargotest,
and the spurious failure makes keeping this test not worth it.
Before this commit `-C codegen-units` would just get silently be
ignored if `-C incremental` was specified too. After this commit
one can control the number of codegen units generated during
incremental compilation. The default is rather high at 256, so most
crates won't see a difference unless explicitly opting into a lower
count.
more clippy fixes
* use is_empty() instead of len comparison (clippy::len_zero)
* use if let instead of while let loop that never loops (clippy::never_loop)
* remove redundant returns (clippy::needless_return)
* remove redundant closures (clippy::redundant_closure)
* use if let instead of match and wildcard pattern (clippy::single_match)
* don't repeat field names redundantly (clippy::redundant_field_names)
r? @Centril
Fix incorrect documentation for `str::{split_at, split_at_mut}`
The documentation for each method currently states:
> Panics if `mid` is not on a UTF-8 code point boundary, or if it is beyond the last code point of the string slice.
However, this is not consistent with the real behavior, or that of the corresponding methods for `[T]` slices. A comment inside each of the `str` methods states:
> is_char_boundary checks that the index is in [0, .len()]
That is what I would expect the behavior to be, and in fact this seems to be the real behavior. For example ([playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=8e03dcc209d4dd176df2297523f9fee1)):
```rust
fn main() {
// Prints ("abc", "") and doesn't panic
println!("{:?}", "abc".split_at(3));
}
```
In this case, I would interpret "the last code point of the string slice" to mean the byte at index 2 in UTF-8. However, it is possible to pass an index of 3, which is definitely "beyond the last code point of the string slice".
I think that this is much clearer, but feel free to bikeshed.
Add `Rust` to the code snippet
Adds `Rust` to the snippet where the code causing the ICE should be placed, so github can render it as Rust code rather than plain code.
std: Fix over-aligned allocations on wasm32-wasi
The wasm32-wasi target delegates its malloc implementation to the
functions in wasi-libc, but the invocation of `aligned_alloc` was
incorrect by passing the number of bytes requested first rather than the
alignment. This commit swaps the order of these two arguments to ensure
that we allocate over-aligned memory correctly.
infer array len from pattern
closes#70529
This still errors in the following case
```rust
#![feature(const_generics)]
fn arr<const N: usize>() -> [u8; N] {
todo!()
}
fn main() {
match arr() {
[5, ..] => (),
//~^ ERROR cannot pattern-match on an array without a fixed length
[_, _] => (),
}
}
```
Considering that this should be rare and is harder to implement I would merge this PR without *fixing* the above.
Add long error code for error E0226
Added a long description message for error E0226, which previously did not exist.
As requested in issue #61137
r? @GuillaumeGomez
Optimize strip_prefix and strip_suffix with str patterns
As mentioned in https://github.com/rust-lang/rust/issues/67302#issuecomment-585639226.
I'm not sure whether adding these methods to `Pattern` is desirable—but they have default implementations so the change is backwards compatible. Plus it seems like they're slated for wholesale replacement soon anyway? #56345
----
Constructing a Searcher in strip_prefix and strip_suffix is
unnecessarily slow when the pattern is a fixed-length string. Add
strip_prefix and strip_suffix methods to the Pattern trait, and add
optimized implementations of these methods in the str implementation.
The old implementation is retained as the default for these methods.
