| Age | Commit message (Collapse) | Author | Lines |
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Remove unnecessary `mut` in test.
The value is moved in `pin!()`, so the binding doesn't need to be `mut` itself.
(Rustc doesn't warn about this due to the current hacky implementation of `pin!()`. That is fixed by https://github.com/rust-lang/rust/pull/139114.)
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Avoid empty identifiers for delegate params and args.
Details in individual commits.
r? `@oli-obk`
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Rename some `name` variables as `ident`.
It bugs me when variables of type `Ident` are called `name`. It leads to silly things like `name.name`. `Ident` variables should be called `ident`, and `name` should be used for variables of type `Symbol`.
This commit improves things by by doing `s/name/ident/` on a bunch of `Ident` variables. Not all of them, but a decent chunk.
r? `@fee1-dead`
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fix "still mutable" ice while metrics are enabled
Resolves "still mutable" ICE discovered by `@matthiaskrgr` here: [#t-docs-rs > metrics intitiative @ 💬](https://rust-lang.zulipchat.com/#narrow/channel/356853-t-docs-rs/topic/metrics.20intitiative/near/510490790)
This was caused by invoking `crate_hash` before the `definitions` struct was frozen here: https://github.com/rust-lang/rust/blob/e643f59f6da3a84f43e75dea99afaa5b041ea6bf/compiler/rustc_interface/src/passes.rs#L951
resolved by moving metrics dumping to occur after `analysis` freezes the definitions
I'm guessing we didn't discover this in CI because the problem only occurs when you try to calculate the crash hash with incremental compilation enabled when it tries to freeze the definitions here: https://github.com/rust-lang/rust/blob/e643f59f6da3a84f43e75dea99afaa5b041ea6bf/compiler/rustc_middle/src/hir/map.rs#L1172
my understanding is that this causes us to freeze the definitions too early in compilation, then we subsequently try to mutate them, likely during `analysis`, and this causes the ICE.
r? `@bjorn3`
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Rollup of 13 pull requests
Successful merges:
- #138167 (Small code improvement in rustdoc hidden stripper)
- #138605 (Clean up librustdoc::html::render to be better encapsulated)
- #139423 (Suppress missing field error when autoderef bottoms out in infer)
- #139449 (match ergonomics: replace `peel_off_references` with a recursive call)
- #139507 (compiletest: Trim whitespace from environment variable names)
- #139530 (Remove some dead or leftover code related to rustc-intrinsic abi removal)
- #139560 (fix title of offset_of_enum feature)
- #139563 (emit a better error message for using the macro incorrectly)
- #139568 (Don't use empty trait names)
- #139580 (Temporarily leave the review rotation)
- #139589 (saethlin is back from vacation)
- #139592 (rustdoc: Enable Markdown extensions when looking for doctests)
- #139599 (Tracking issue template: fine-grained information on style update status)
r? `@ghost`
`@rustbot` modify labels: rollup
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The value is moved in pin!().
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rustdoc: Enable Markdown extensions when looking for doctests
Fixes #139064.
We should enable these to avoid misinterpreting uses of the extended
syntax as code blocks. This happens in practice with multi-paragraph
footnotes, as discovered in #139064.
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Don't use empty trait names
Helps with #137978. Details in individual commits.
r? ```@davidtwco```
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emit a better error message for using the macro incorrectly
fixing: https://github.com/EnzymeAD/rust/issues/185
I feel like it's not a perfect message either, so I'm open to suggestions.
But at the end of the day users will need to read the docs anyway, and emitting
multi-line errors each time this gets triggered can probably become annoying?
r? ``@jieyouxu`` since you've reviewed my frontend work back in the days.
Tracking:
- https://github.com/rust-lang/rust/issues/124509
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Remove some dead or leftover code related to rustc-intrinsic abi removal
r? ```@RalfJung```
PR that removed the ABI: https://github.com/rust-lang/rust/pull/139455
tracking issue: https://github.com/rust-lang/rust/issues/132735
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compiletest: Trim whitespace from environment variable names
When a test contains a directive like `//@ exec-env: FOO=bar`, compiletest currently includes that leading space in the name of the environment variable, so it is defined as ` FOO` instead of `FOO`.
This is an annoying footgun that is pretty much never intended, especially since most other directives *do* trim whitespace. So let's get rid of it by trimming the environment variable name.
Values remain untrimmed, since there could conceivably be a use-case for values with leading space, but perhaps we'll end up trimming values too in the future.
Recently observed in https://github.com/rust-lang/rust/pull/138603#issuecomment-2783709359.
Fixes #132990.
Supersedes #133148.
---
try-job: test-various
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Suppress missing field error when autoderef bottoms out in infer
I see this error repeatedly when doing refactorings, and it's pretty misleading b/c it's not the source of the error.
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Ergonomic ref counting: optimize away clones when possible
This PR build on top of https://github.com/rust-lang/rust/pull/134797. It optimizes codegen of ergonomic ref-counting when the type being `use`d is only known to be copy after monomorphization. We avoid codening a clone and generate bitwise copy instead.
RFC: https://github.com/rust-lang/rfcs/pull/3680
Tracking issue: https://github.com/rust-lang/rust/issues/132290
Project goal: https://github.com/rust-lang/rust-project-goals/issues/107
r? `@nikomatsakis`
This PR could better sit on top of https://github.com/rust-lang/rust/pull/131650 but as it did not land yet I've decided to just do minimal changes. It may be the case that doing what I'm doing regress the performance and we may need to go the full route of https://github.com/rust-lang/rust/pull/131650.
cc `@saethlin` in this regard.
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Instead use `argN`. The empty identifiers could flow to
`Liveness::should_warn`, where they would trigger a bounds error.
Fixes #139512.
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Note that some of the output is currently bogus, with missing params and
args:
```
fn add(: _, : _) -> _ { m::add(, ) }
```
The next commit will fix this.
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Rigidly project missing item due to guaranteed impossible sized predicate
This is a somewhat involved change, but it amounts to treating missing impl items due to guaranteed impossible where clauses (dyn/str/slice sized, cc #135480) as *rigid projections* rather than projecting to an error term, since that was preventing either reporting a proper error (in an empty param env) *or* successfully type checking the code (in the presence of trivially false where clauses).
Fixes https://github.com/rust-lang/rust/issues/138970
r? `@lcnr` `@oli-obk`
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It bugs me when variables of type `Ident` are called `name`. It leads to
silly things like `name.name`. `Ident` variables should be called
`ident`, and `name` should be used for variables of type `Symbol`.
This commit improves things by by doing `s/name/ident/` on a bunch of
`Ident` variables. Not all of them, but a decent chunk.
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Rollup of 10 pull requests
Successful merges:
- #138470 (Test interaction between RFC 2229 migration and use closures)
- #138628 (Add more ergonomic clone tests)
- #139164 (std: improve documentation for get_mut() methods regarding forgotten guards)
- #139488 (Add missing regression GUI test)
- #139489 (compiletest: Add directive `dont-require-annotations`)
- #139513 (Report higher-ranked trait error when higher-ranked projection goal fails in new solver)
- #139521 (triagebot: roll compiler reviewers for rustc/unstable book)
- #139532 (Update `u8`-to-and-from-`i8` suggestions.)
- #139551 (report call site of inlined scopes for large assignment lints)
- #139575 (Remove redundant words)
r? `@ghost`
`@rustbot` modify labels: rollup
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error reporting
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report call site of inlined scopes for large assignment lints
Addressed issue: #121672
Tracking issue: #83518
r? `@oli-obk`
I tried to follow your comment about what to do [here](https://github.com/rust-lang/rust/issues/121672#issuecomment-1972783675). However, I'm totally unfamiliar with the code so far (this is my first contribution touching compiler code), so I apologize in advance if I did something stupid :sweat_smile:
In particular, I'm not sure I use the _correct_ source scope to look for inline data, as there is a whole `IndexVec` of them. My changes definitely did something, as can be seen by the added ui test. However, the result is not as anticipated in the issue:
```
LL | let cell = std::cell::UnsafeCell::new(data);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ value moved from here
```
instead of
```
LL | let cell = std::cell::UnsafeCell::new(data);
| ^^^^ value moved from here
```
raising my suspicion that maybe I got the wrong source scope.
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Report higher-ranked trait error when higher-ranked projection goal fails in new solver
~~See HACK comment inline. Not actually sure if it should be marked as a *HACK*, b/c~~ it's kinda a legitimate case we want to care about unless we're going to make the proof tree visitor *smarter* about the leak check than the actual trait solver itself.
Encountered this while battling with `NiceRegionError`s in the old solver b/c I wondered what this code ended up giving us in the *new* solver as a comparison:
```rust
trait Foo {}
impl<T: FnOnce(&())> Foo for T {}
fn baz<T: Foo>() {}
fn main() {
baz::<fn(&'static ())>();
}
```
On master it's pretty bad:
```
error[E0271]: type mismatch resolving `<fn(&()) as FnOnce<(&(),)>>::Output == ()`
--> <source>:8:11
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8 | baz::<fn(&'static ())>();
| ^^^^^^^^^^^^^^^ types differ
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note: required for `fn(&'static ())` to implement `Foo`
--> <source>:3:22
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3 | impl<T: FnOnce(&())> Foo for T {}
| ----------- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
After this PR it's much better:
```
error[E0277]: the trait bound `fn(&'static ()): Foo` is not satisfied
--> /home/mgx/test.rs:8:11
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8 | baz::<fn(&'static ())>();
| ^^^^^^^^^^^^^^^ the trait `for<'a> FnOnce(&'a ())` is not implemented for `fn(&'static ())`
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= note: expected a closure with arguments `(&'static (),)`
found a closure with arguments `(&(),)`
note: required for `fn(&'static ())` to implement `Foo`
--> /home/mgx/test.rs:3:22
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3 | impl<T: FnOnce(&())> Foo for T {}
| ----------- ^^^ ^
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| unsatisfied trait bound introduced here
note: required by a bound in `baz`
--> /home/mgx/test.rs:5:11
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5 | fn baz<T: Foo>() {}
| ^^^ required by this bound in `baz`
```
r? lcnr
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compiletest: Add directive `dont-require-annotations`
for making matching on specific diagnostic kinds non-exhaustive.
E.g. `//@ dont-require-annotations:ERROR`, like in the examples in this PR.
cc https://github.com/rust-lang/rust/pull/139427#issuecomment-2782827583
Closes #132647 FYI `@BoxyUwU` since you've wanted this.
r? `@jieyouxu`
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Add missing regression GUI test
Add missing GUI test for #139282 (and also fixes the invalid CSS).
cc `@lolbinarycat`
r? `@notriddle`
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r=nikomatsakis
Add more ergonomic clone tests
I've added some extra tests.
r? `@nikomatsakis`
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r=nikomatsakis
Test interaction between RFC 2229 migration and use closures
r? `@nikomatsakis`
Fixes #138101
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r=tgross35
speed up `String::push` and `String::insert`
Addresses the concerns described in #116235.
The performance gain comes mainly from avoiding temporary buffers.
Complex pattern matching in `encode_utf8` (introduced in #67569) has been simplified to a comparison and an exhaustive `match` in the `encode_utf8_raw_unchecked` helper function. It takes a slice of `MaybeUninit<u8>` because otherwise we'd have to construct a normal slice to uninitialized data, which is not desirable, I guess.
Several functions still have that [unneeded zeroing](https://rust.godbolt.org/z/5oKfMPo7j), but a single instruction is not that important, I guess.
`@rustbot` label T-libs C-optimization A-str
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new solver
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We should enable these to avoid misinterpreting uses of the extended
syntax as code blocks. This happens in practice with multi-paragraph
footnotes, as discovered in #139064.
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Make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path.
close #127011
Currently, when emitting a diagnostic about a valid trait, the compiler suggestes using visible paths of the trait even if they are through a doc hidden path. This PR updates the compiler to suggest actual paths in these cases.
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Try not to use verbatim paths in `Command::current_dir`
If possible, we should try not to use verbatim paths in `Command::current_dir`. It might work but it might also break code in the subprocess that assume the current directory isn't verbatim (including Windows APIs). cc ``@ehuss``
Side note: we now have a lot of ad-hoc fixes like this spread about the place. It'd be good to make a proper `WindowsPath` type that handles all this in one place. But that's a bigger job for another PR.
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Improve performance of `String` methods by avoiding unnecessary memcpy
for the character bytes, with added codegen check to ensure compliance.
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Allow GVN to produce places and not just locals.
That may be too big of a hammer, as we may introduce new deref projections (possible UB footgun + probably not good for perf).
The second commit opts out of introducing projections that don't have a stable offset, which is probably what we want. Hence no new Deref and no new Index projections.
Fixes https://github.com/rust-lang/rust/issues/138936
cc `@scottmcm` `@dianqk`
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Rollup of 10 pull requests
Successful merges:
- #139494 (Restrict some queries by def-kind more)
- #139496 (Revert r-a changes of rust-lang/rust#139455)
- #139506 (add missing word in doc comment (part 2))
- #139515 (Improve presentation of closure signature mismatch from `Fn` trait goal)
- #139520 (compiletest maintenance: sort deps and drop dep on `anyhow`)
- #139523 (Rustc dev guide subtree update)
- #139526 (Fix deprecation note for std::intrinsics)
- #139528 (compiletest: Remove the `--logfile` flag)
- #139541 (Instantiate higher-ranked transmute goal w/ placeholders before emitting sub-obligations)
- #139547 (Update library tracking issue template to set S-tracking-unimplemented)
r? `@ghost`
`@rustbot` modify labels: rollup
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`resolve_ident_in_lexical_scope` checks for an empty name. Why is this
necessary? Because `parse_item_impl` can produce an `impl` block with an
empty trait name in some cases. This is pretty gross and very
non-obvious.
This commit avoids the use of the empty trait name. In one case the
trait name is instead pulled from `TyKind::ImplTrait`, which prevents
the output for `tests/ui/impl-trait/extra-impl-in-trait-impl.rs` from
changing. In the other case we just fail the parse and don't try to
recover. I think losing error recovery in this obscure case is worth
the code cleanup.
This change affects `tests/ui/parser/impl-parsing.rs`, which is split in
two, and the obsolete `..` syntax cases are removed (they are tested
elsewhere).
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UI tests: add missing diagnostic kinds where possible
The subset of https://github.com/rust-lang/rust/pull/139427 that only adds diagnostic kinds to line annotations, without changing any other things in annotations or compiletest.
After this only non-viral `NOTE`s and `HELP`s should be missing.
r? `@jieyouxu`
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Rollup of 7 pull requests
Successful merges:
- #139476 (rm `RegionInferenceContext::var_infos`)
- #139485 (compiletest: Stricter parsing for diagnostic kinds)
- #139491 (Update books)
- #139500 (document panic behavior of Vec::resize and Vec::resize_with)
- #139501 (Fix stack overflow in exhaustiveness due to recursive HIR opaque hidden types)
- #139504 (add missing word in doc comment)
- #139509 (clean: remove Deref<Target=RegionKind> impl for Region and use `.kind()`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Instantiate higher-ranked transmute goal w/ placeholders before emitting sub-obligations
This avoids an ICE where we weren't keeping track of bound variables correctly in the `Freeze` obligations we emit for transmute goals. We could use `rebind` instead on that goal, but I think it's better just to instantiate the binder.
Fixes #139538
r? `@lcnr` or reassign
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Improve presentation of closure signature mismatch from `Fn` trait goal
Flip the order of "expected" and "found" since that wasn't correct.
Don't present the arguments as a tuple, since it leaves a trailing comma. Instead, just use `fn(arg, arg)`.
Finally, be better with binders since we were just skipping binders.
r? oli-obk or reassign
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