rust/library at 3bfeffd55bbc7d653d2df7ad265746bafe595a96 - rust

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T

bors 3bfeffd55b Auto merge of #95904 - paolobarbolini:vecdeque-specextend, r=the8472

Add VecDeque::extend from vec::IntoIter and slice::Iter specializations

Inspired from the [`Vec` `SpecExtend` implementation](https://github.com/rust-lang/rust/blob/027a232755fa9728e9699337267f6675dfd0a8ba/library/alloc/src/vec/spec_extend.rs), but without the specialization for `TrustedLen` which I'll look into in the future.

Should help #95632 and https://github.com/KillingSpark/zstd-rs/pull/17

## Benchmarks

Before

```
test vec_deque::bench_extend_bytes    ... bench:         862 ns/iter (+/- 10)
test vec_deque::bench_extend_vec      ... bench:         883 ns/iter (+/- 19)
```

After

```
test vec_deque::bench_extend_bytes    ... bench:           8 ns/iter (+/- 0)
test vec_deque::bench_extend_vec      ... bench:          24 ns/iter (+/- 1)

```

2022-04-28 09:27:21 +00:00

alloc

Add VecDeque::extend from vec::IntoIter and slice::Iter specializations

2022-04-28 06:13:54 +02:00

backtrace @ b02ed04a7e

Updated backtrace submodule

2021-11-02 12:31:34 +01:00

core

Better error messages when collecting into [T; n]

2022-04-26 21:37:10 -07:00

panic_abort

fix some unused constant warning on some Windows targets