docs: Update tests chapter for Termination stabilization
A small update for the docs of `#[test]` functions as a result of the `Termination` stabilization in #93840.
Use u32 instead of i32 for futexes.
This changes futexes from i32 to u32. The [Linux man page](https://man7.org/linux/man-pages/man2/futex.2.html) uses `uint32_t` for them, so I'm not sure why I used i32 for them. Maybe because I first used them for thread parkers, where I used -1, 0, and 1 as the states.
(Wasm's `memory.atomic.wait32` does use `i32`, because wasm doesn't support `u32`.)
It doesn't matter much, but using the unsigned type probably results in fewer surprises when shifting bits around or using comparison operators.
r? ```@Amanieu```
only downgrade selection Error -> Ambiguous if type error is in predicate
That is, we don't care if there's a TypeError type in the ParamEnv.
Fixes#95408
remove find_use_placement
A more robust solution to finding where to place use suggestions was added in #94584.
The algorithm uses the AST to find the span for the suggestion so we pass this span
down to the HIR during lowering and use it instead of calling `find_use_placement`
Fixes#94941
Check var scope if it exist
Fixes#92893.
Added helper function to check the scope of a variable, if it doesn't have a scope call delay_span_bug, which avoids us trying to get a block/scope that doesn't exist.
Had to increase `ROOT_ENTRY_LIMIT` was getting tidy error
Create (unstable) 2024 edition
[On Zulip](https://rust-lang.zulipchat.com/#narrow/stream/213817-t-lang/topic/Deprecating.20macro.20scoping.20shenanigans/near/272860652), there was a small aside regarding creating the 2024 edition now as opposed to later. There was a reasonable amount of support and no stated opposition.
This change creates the 2024 edition in the compiler and creates a prelude for the 2024 edition. There is no current difference between the 2021 and 2024 editions. Cargo and other tools will need to be updated separately, as it's not in the same repository. This change permits the vast majority of work towards the next edition to proceed _now_ instead of waiting until 2024.
For sanity purposes, I've merged the "hello" UI tests into a single file with multiple revisions. Otherwise we'd end up with a file per edition, despite them being essentially identical.
````@rustbot```` label +T-lang +S-waiting-on-review
Not sure on the relevant team, to be honest.
Stabilize `derive_default_enum`
This stabilizes `#![feature(derive_default_enum)]`, as proposed in [RFC 3107](https://github.com/rust-lang/rfcs/pull/3107) and tracked in #87517. In short, it permits you to `#[derive(Default)]` on `enum`s, indicating what the default should be by placing a `#[default]` attribute on the desired variant (which must be a unit variant in the interest of forward compatibility).
```````@rustbot``````` label +S-waiting-on-review +T-lang
Windows: Use a pipe relay for chaining pipes
Fixes#95759
This fixes the issue by chaining pipes synchronously and manually pumping messages between them. It's not ideal but it has the advantage of not costing anything if pipes are not chained ("don't pay for what you don't use") and it also avoids breaking existing code that rely on our end of the pipe being asynchronous (which includes rustc's own testing framework).
Libraries can avoid needing this by using their own pipes to chain commands.
when checking pointee metadata, canonicalize the `Sized` check
Use `infcx.predicate_must_hold_modulo_regions` with a `Sized` obligation instead of just calling `ty.is_sized`, because the latter does not canonicalize region and type vars (and in the test case I added in this PR, there's a region var in the `ParamEnv`).
Fixes#95311
Update cargo
11 commits in e2e2dddebe66dfc1403a312653557e332445308b..dba5baf4345858c591517b24801902a062c399f8
2022-04-05 17:04:53 +0000 to 2022-04-13 21:58:27 +0000
- Part 6 of RFC2906 - Switch the inheritance source from `workspace` to… (rust-lang/cargo#10564)
- Part 5 of RFC2906 - Add support for inheriting `rust-version` (rust-lang/cargo#10563)
- Add support for rustc --check-cfg well known names and values (rust-lang/cargo#10486)
- Reserve filename `Cargo.toml.orig` in `cargo package` (rust-lang/cargo#10551)
- Retry command invocation with argfile (rust-lang/cargo#10546)
- Add a progress indicator for `cargo clean` (rust-lang/cargo#10236)
- Ensure host units don't depend on Docscrape units, fixesrust-lang/cargo#10545 (rust-lang/cargo#10549)
- Fix docs: Bindeps env vars are passed to build script at runtime (rust-lang/cargo#10550)
- Part 4 of RFC2906 - Add support for inheriting `readme` (rust-lang/cargo#10548)
- Part 3 of RFC2906 - Add support for inheriting `license-path`, and `depednency.path` (rust-lang/cargo#10538)
- Bump to 0.63.0, update changelog (rust-lang/cargo#10544)
Remove `<mbe::TokenTree as Clone>`
`mbe::TokenTree` doesn't really need to implement `Clone`, and getting rid of that impl leads to some speed-ups.
r? `@petrochenkov`
errors: lazily load fallback fluent bundle
Addresses (hopefully) https://github.com/rust-lang/rust/pull/95667#issuecomment-1094794087.
Loading the fallback bundle in compilation sessions that won't go on to emit any errors unnecessarily degrades compile time performance, so lazily create the Fluent bundle when it is first required.
r? `@ghost` (just for perf initially)
Update stdarch
library/stdarch bcbe0106...d215afe9 (7):
- Add the rdm target feature to the sqrdmlsh intrinsic. (rust-lang/stdarch#1285)
- Remove use of `#[rustc_deprecated]`
- Remove feature gates for stabilized features
- Change remaining _undefined_ functions to zero-init
- Use SPDX license format and update packed_simd crate link (rust-lang/stdarch#1297)
- Fix broken links (rust-lang/stdarch#1294)
- Import the asm macro in std_detect (rust-lang/stdarch#1290)
fix: wrong trait import suggestion for T:
The suggestion to bound `T` had an extra `:`.
```rust
fn foo<T:>(t: T) {
t.clone();
}
```
```
error[E0599]: no method named `clone` found for type parameter `T` in the current scope
--> src/lib.rs:2:7
|
2 | t.clone();
| ^^^^^ method not found in `T`
|
= help: items from traits can only be used if the type parameter is bounded by the trait
help: the following trait defines an item `clone`, perhaps you need to restrict type parameter `T` with it:
|
1 | fn foo<T: Clone:>(t: T) {
| ~~~~~~~~
```
Fixes: #95898
Document that DirEntry holds the directory open
I had a bug where holding onto DirEntry structs caused file descriptor exhaustion, and thought it would be good to document this.
Improve Rustdoc UI for scraped examples with multiline arguments, fix overflow in line numbers
This PR improves a few aspects of the scrape examples feature in Rustdoc.
* Only function names and not the full call expression are highlighted.
* For call-sites with multiline arguments, the minimized code viewer will scroll to the top of the call-site rather than the middle if the argument is larger than the viewer size, ensuring that the function name is visible.
* This fixes an issue where the line numbers column had a visible x-scroll bar.
r? `@GuillaumeGomez`
Dylan DPC