Rollup of 9 pull requests #128237
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Rollup of 9 pull requests #128237
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the current title is too similar to that of the page for std::result::Result, which is a problem both for navigating to the Result docs via browser autocomplete, and for being able to tell which tab is which when the width of tabs is small.
This has been bugging me for a while. I find complex "if any of these are true" conditions easier to think about than complex "if all of these are true" conditions, because you can stop as soon as one is true.
It has a single call site. This change makes the two `needs_collect` conditions more similar to each other, and therefore easier to understand.
And make it non-`pub`.
I have always found `is_complete` an unhelpful name. The new name (and inverted sense) fits in better with the conditions at its call sites.
The current code is this: ``` self.capture_state.replace_ranges.push((start_pos..end_pos, Some(target))); self.capture_state.replace_ranges.extend(inner_attr_replace_ranges); ``` What's not obvious is that every range in `inner_attr_replace_ranges` must be a strict sub-range of `start_pos..end_pos`. Which means, in `LazyAttrTokenStreamImpl::to_attr_token_stream`, they will be done first, and then the `start_pos..end_pos` replacement will just overwrite them. So they aren't needed.
Imagine you have replace ranges (2..20,X) and (5..15,Y), and these tokens: ``` a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x ``` If we replace (5..15,Y) first, then (2..20,X) we get this sequence ``` a,b,c,d,e,Y,_,_,_,_,_,_,_,_,_,p,q,r,s,t,u,v,w,x a,b,X,_,_,_,_,_,_,_,_,_,_,_,_,_,_,_,_,_,u,v,w,x ``` which is what we want. If we do it in the other order, we get this: ``` a,b,X,_,_,_,_,_,_,_,_,_,_,_,_,p,q,r,s,t,u,v,w,x a,b,X,_,_,Y,_,_,_,_,_,_,_,_,_,_,_,_,_,_,u,v,w,x ``` which is wrong. So it's true that we need the `.rev()` but the comment is wrong about why.
A fully imperative style is easier to read than a half-iterator, half-imperative style. Also, rename `inner_attr` as `attr` because it might be an outer attribute.
This was handled correctly already for `extern unsafe fn()`. Co-authored-by: Folkert <[email protected]>
Support ?Trait bounds in supertraits and dyn Trait under a feature gate
This patch allows `maybe` polarity bounds under a feature gate. The only language change here is that corresponding hard errors are replaced by feature gates. Example:
```rust
#![feature(allow_maybe_polarity)]
...
trait Trait1 : ?Trait { ... } // ok
fn foo(_: Box<(dyn Trait2 + ?Trait)>) {} // ok
fn bar<T: ?Sized + ?Trait>(_: &T) {} // ok
```
Maybe bounds still don't do anything (except for `Sized` trait), however this patch will allow us to [experiment with default auto traits](rust-lang#120706 (comment)).
This is a part of the [MCP: Low level components for async drop](rust-lang/compiler-team#727)
…tr, r=dtolnay
Stabilize const `{integer}::from_str_radix` i.e. `const_int_from_str`
This PR stabilizes the feature `const_int_from_str`.
- ACP Issue: rust-lang/libs-team#74
- Implementation PR: rust-lang#99322
- Part of Tracking Issue: rust-lang#59133
API Change Diff:
```diff
impl {integer} {
- pub fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>;
+ pub const fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>;
}
impl ParseIntError {
- pub fn kind(&self) -> &IntErrorKind;
+ pub const fn kind(&self) -> &IntErrorKind;
}
```
This makes it easier to parse integers at compile-time, e.g.
the example from the Tracking Issue:
```rust
env!("SOMETHING").parse::<usize>().unwrap()
```
could now be achived with
```rust
match usize::from_str_radix(env!("SOMETHING"), 10) {
Ok(val) => val,
Err(err) => panic!("Invalid value for SOMETHING environment variable."),
}
```
rather than having to depend on a library that implements or manually implement the parsing at compile-time.
---
Checklist based on [Libs Stabilization Guide - When there's const involved](https://std-dev-guide.rust-lang.org/development/stabilization.html#when-theres-const-involved)
I am treating this as a [partial stabilization](https://std-dev-guide.rust-lang.org/development/stabilization.html#partial-stabilizations) as it shares a tracking issue (and is rather small), so directly opening the partial stabilization PR for the subset (feature `const_int_from_str`) being stabilized.
- [x] ping Constant Evaluation WG
- [x] no unsafe involved
- [x] no `#[allow_internal_unstable]`
- [ ] usage of `intrinsic::const_eval_select` rust-lang#124625 in `from_str_radix_assert` to change the error message between compile-time and run-time
- [ ] [rust-labg/libs-api FCP](rust-lang#124941 (comment))
… r=notriddle,GuillaumeGomez rustdoc: change title of search results the current title is too similar to that of the page for std::result::Result, which is a problem both for navigating to the Result docs via browser autocomplete, and for being able to tell which tab is which when the width of tabs is small.
…s, r=petrochenkov Refactor complex conditions in `collect_tokens_trailing_token` More readability improvements for this complicated function. r? ``@petrochenkov``
…r=petrochenkov Remove unnecessary range replacements This PR removes an unnecessary range replacement in `collect_tokens_trailing_token`, and does a couple of other small cleanups. r? ``@petrochenkov``
…etrochenkov Remove redundant option that was just encoding that a slice was empty There is already a sanity check ensuring we don't put empty attribute lists into the HIR: https://github.com/rust-lang/rust/blob/6ef11b81c2c02c3c4b7556d1991a98572fe9af87/compiler/rustc_ast_lowering/src/lib.rs#L661-L667
…ix, r=tgross35 CI: do not respect custom try jobs for unrolled perf builds Before this PR, if a pull request merged in a rollup had some `try-job` annotations, the unrolled perf builds were running the custom try jobs instead of the default job, which was wrong. Found out [here](https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/try-perf.20jobs.20respect.20try-job.20annotations).
…compiler-errors Improve `extern "<abi>" unsafe fn()` error message These errors were already reported in rust-lang#87217, and fixed by rust-lang#87235 but missed the case of an explicit ABI. This PR does not cover multiple keywords like `extern "C" pub const unsafe fn()`, but I don't know what a good way to cover this would be. It also seems rarer than `extern "C" unsafe` which I saw happen a few times in workshops.
…ocs, r=tgross35 Fix `Iterator::filter` docs Small fix to add code formatting around `Iterator::filter` `true` return type
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@bors r+ rollup=never p=5 |
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Rollup of 9 pull requests Successful merges: - rust-lang#121676 (Support ?Trait bounds in supertraits and dyn Trait under a feature gate) - rust-lang#124941 (Stabilize const `{integer}::from_str_radix` i.e. `const_int_from_str`) - rust-lang#128210 (rustdoc: change title of search results) - rust-lang#128223 (Refactor complex conditions in `collect_tokens_trailing_token`) - rust-lang#128224 (Remove unnecessary range replacements) - rust-lang#128226 (Remove redundant option that was just encoding that a slice was empty) - rust-lang#128227 (CI: do not respect custom try jobs for unrolled perf builds) - rust-lang#128229 (Improve `extern "<abi>" unsafe fn()` error message) - rust-lang#128235 (Fix `Iterator::filter` docs) r? `@ghost` `@rustbot` modify labels: rollup
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The job Click to see the possible cause of the failure (guessed by this bot) |
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💔 Test failed - checks-actions |
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@bors retry link.exe fun |
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I'll just recreate since there is another one to pick up. |
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Successful merges:
{integer}::from_str_radixi.e.const_int_from_str#124941 (Stabilize const{integer}::from_str_radixi.e.const_int_from_str)collect_tokens_trailing_token#128223 (Refactor complex conditions incollect_tokens_trailing_token)extern "<abi>" unsafe fn()error message #128229 (Improveextern "<abi>" unsafe fn()error message)Iterator::filterdocs #128235 (FixIterator::filterdocs)r? @ghost
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