Rollup of 5 pull requests #91691
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Rollup of 5 pull requests #91691
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Use Vec extend instead of repeated pushes on several places Inspired by rust-lang#90813, I tried to use a simple regex (`for .*in.*\{\n.*push\(.*\);\n\s+}`) to search for more places that would use `Vec::push` in a loop and replace them with `Vec::extend`. These probably won't have as much perf. impact as the original PR (if any), but it would probably be better to do a perf run to see if there are not any regressions.
Improve 'cannot contain emoji' error. Before: ``` error: identifiers cannot contain emoji: `🦀` --> src/main.rs:2:9 | 2 | let 🦀 = 1; | ^^ ``` After: ``` error: Ferris cannot be used as an identifier --> src/main.rs:2:9 | 2 | let 🦀 = 1; | ^^ help: try using their name instead: `ferris` ``` r? `@estebank`
Pretty print break and continue without redundant space
**Repro:**
```rust
macro_rules! m {
($e:expr) => { stringify!($e) };
}
fn main() {
println!("{:?}", m!(loop { break; }));
println!("{:?}", m!(loop { break 'a; }));
println!("{:?}", m!(loop { break false; }));
}
```
**Before:**
- `"loop { break ; }"`
- `"loop { break 'a ; }"`
- `"loop { break false ; }"`
**After:**
- `"loop { break; }"`
- `"loop { break 'a; }"`
- `"loop { break false; }"`
<br>
Notice that `return` and `yield` already follow the same approach as this PR of printing the space *before* each additional piece following the keyword, rather than *after* each thing.
https://github.com/rust-lang/rust/blob/772d51f887fa407216860bf8ecf3f1a32fb795b4/compiler/rustc_ast_pretty/src/pprust/state.rs#L2148-L2154
https://github.com/rust-lang/rust/blob/772d51f887fa407216860bf8ecf3f1a32fb795b4/compiler/rustc_ast_pretty/src/pprust/state.rs#L2221-L2228
…lett
Implement `core::future::join!`
`join!` polls multiple futures concurrently and returns their outputs.
```rust
async fn run() {
let (a, b) = join!(async { 0 }, async { 1 });
}
```
cc `@rust-lang/wg-async-foundations`
update Miri Fixes rust-lang#91649 r? `@ghost`
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@bors r+ rollup=never p=5 |
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📌 Commit 229aa1b has been approved by |
bors
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☀️ Test successful - checks-actions |
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Dec 9, 2021
Tested on commit rust-lang/rust@e250777. Direct link to PR: <rust-lang/rust#91691> 🎉 miri on windows: test-fail → test-pass (cc @eddyb @oli-obk @RalfJung). 🎉 miri on linux: test-fail → test-pass (cc @eddyb @oli-obk @RalfJung).
This was referenced Dec 9, 2021
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Finished benchmarking commit (e250777): comparison url. Summary: This benchmark run did not return any relevant changes. If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf. @rustbot label: -perf-regression |
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Successful merges:
core::future::join!#91645 (Implementcore::future::join!)Failed merges:
r? @ghost
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