Rollup of 7 pull requests #89702
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Rollup of 7 pull requests #89702
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On this platform, when doing stack allocation, MAP_STACK is needed otherwise the mapping fails.
Tracking issue: rust-lang#44434
Improve last commit of rust_lang#75644
also add a new SAFETY comment and simplify/remove a closure
… on an impl trait
The "Alphabetic" property in Unicode 14 grew too big for the bitset representation, panicking "cannot pack 264 into 8 bits". However, we were already choosing the skiplist for that anyway, so this doesn't need to be a hard failure. That panic is now a returned `Err`, and then in `emit_codepoints` we automatically defer to skiplist.
Among other changes, documents whether allocations are necessary to complete the type conversion. Part of rust-lang#51430 Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com> Co-authored-by: Joshua Nelson <github@jyn.dev>
Co-authored-by: Josh Triplett <josh@joshtriplett.org> Co-authored-by: Laurențiu Nicola <lnicola@users.noreply.github.com>
Co-authored-by: Laurențiu Nicola <lnicola@users.noreply.github.com>
Add 'core::array::from_fn' and 'core::array::try_from_fn'
These auxiliary methods fill uninitialized arrays in a safe way and are particularly useful for elements that don't implement `Default`.
```rust
// Foo doesn't implement Default
struct Foo(usize);
let _array = core::array::from_fn::<_, _, 2>(|idx| Foo(idx));
```
Different from `FromIterator`, it is guaranteed that the array will be fully filled and no error regarding uninitialized state will be throw. In certain scenarios, however, the creation of an **element** can fail and that is why the `try_from_fn` function is also provided.
```rust
#[derive(Debug, PartialEq)]
enum SomeError {
Foo,
}
let array = core::array::try_from_fn(|i| Ok::<_, SomeError>(i));
assert_eq!(array, Ok([0, 1, 2, 3, 4]));
let another_array = core::array::try_from_fn(|_| Err(SomeError::Foo));
assert_eq!(another_array, Err(SomeError::Foo));
```
stack overflow handler specific openbsd change.
std: Stabilize command_access Tracking issue: rust-lang#44434 (not yet closed but the FCP is done so that should be soon).
… r=estebank Remove textual span from diagnostic string This is an unnecessary repetition, as the diagnostic prints the span anyway in the source path right below the message. I further removed the identification of the node, as that does not give any new information in any of the cases that are changed in tests. EDIT: also inserted a suggestion that other diagnostics were already emitting
Update to Unicode 14.0 The Unicode Standard [announced Version 14.0](https://home.unicode.org/announcing-the-unicode-standard-version-14-0/) on September 14, 2021, and this pull request updates the generated tables in `core` accordingly. This did require a little prep-work in `unicode-table-generator`. First, rust-lang#81358 had modified the generated file instead of the tool, so that change is now reflected in the tool as well. Next, I found that the "Alphabetic" property in version 14 was panicking when generating a bitset, "cannot pack 264 into 8 bits". We've been using the skiplist for that anyway, so I changed this to fail gracefully. Finally, I confirmed that the tool still created the exact same tables for 13 before moving to 14.
…ersions, r=m-ou-se Add documentation to boxed conversions Among other changes, documents whether allocations are necessary to complete the type conversion. Part of rust-lang#51430, supersedes rust-lang#89199
…ound-html-gen, r=notriddle Fix invalid HTML generation for higher bounds Considering this is a bug, I cherry-picked the commit from rust-lang#89676 so it's merged more quickly. r? `@notriddle`
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@bors: r+ p=7 rollup=never |
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