Rollup of 8 pull requests #108027
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Rollup of 8 pull requests #108027
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See the inline comments for the description of the new algorithm.
Specifically remove V, which can always be VariantIdx, and F, which can always be Layout.
--wip-- [skip ci] get the generic text and put it int he suggestion, but suggestion not working on derive subdiagnostic refactor away from derives and use span_suggestion() instead. Show's the correct(?) generic contents, but overwrites the fn name :( x fmt drop commented code and s/todo/fixme get the correct diagnostic for functions, at least x fmt remove some debugs remove format remove debugs remove useless change remove useless change remove legacy approach correct lookahead + error message contains the ident name fmt refactor code tests add tests remoev debug remove comment
Co-authored-by: Takayuki Maeda <takoyaki0316@gmail.com>
…66_fix, r=TaKO8Ki Suggest fix for misplaced generic params on fn item rust-lang#103366 fixes rust-lang#103366 This still has some work to go, but works for 2/3 of the initial base cases described in #1033366 simple fn: ``` error: expected identifier, found `<` --> shreys/test_1.rs:1:3 | 1 | fn<T> id(x: T) -> T { x } | ^ expected identifier | help: help: place the generic parameter list after the function name: | 1 | fn id<T>(x: T) -> T { x } | ~~~~ ``` Complicated bounds ``` error: expected identifier, found `<` --> spanishpear/test_2.rs:1:3 | 1 | fn<'a, B: 'a + std::ops::Add<Output = u32>> f(_x: B) { } | ^ expected identifier | help: help: place the generic parameter list after the function name: | 1 | fn f<'a, B: 'a + std::ops::Add<Output = u32>>(_x: B) { } | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ``` Opening a draft PR for comments on approach, particularly I have the following questions: - [x] Is it okay to be using `err.span_suggestion` over struct derives? I struggled to get the initial implementation (particularly the correct suggestion message) on struct derives, although I think given what I've learned since starting, I could attempt re-doing it with that approach. - [x] in the case where the snippet cannot be obtained from a span, is the `help` but no suggestion okay? I think yes (also, when does this case occur?) - [x] are there any red flags for the generalisation of this work for relevant item kinds (i.e. `struct`, `enum`, `trait`, and `union`). My basic testing indicates it does work for those types except the help tip is currently hardcoded to `after the function name` - which should change dependent on the item. - [x] I am planning to not show the suggestion if there is already a `<` after the item identifier, (i.e. if there are already generics, as after a function name per the original issue). Any major objections? - [x] Is the style of error okay? I wasn't sure if there was a way to make it display nicer, or if thats handled by span_suggestion These aren't blocking questions, and I will keep working on: - check if there is a `<` after the ident (and if so, not showing the suggestion) - generalize the help message - figuring out how to write/run/etc ui tests (including reading the docs for them) - logic cleanups
rework min_choice algorithm of member constraints See [this comment](rust-lang#105300 (comment)) for the description of the new algorithm. Fixes rust-lang#63033 Fixes rust-lang#104639 This uses a more general algorithm than rust-lang#89056 that doesn't treat `'static` as a special case. It thus accepts more code. For example: ```rust async fn test2<'s>(_: &'s u8, _: &'_ &'s u8, _: &'_ &'s u8) {} ``` I claim it's more correct as well because it fixes rust-lang#104639. cc `@nikomatsakis` `@lqd` `@tmandry` `@eholk` `@chenyukang` `@oli-obk` r? types
Use id-based thread parking on SOLID By using the [`slp_tsk`/`wup_tsk`](https://cs.uwaterloo.ca/~brecht/courses/702/Possible-Readings/embedded/uITRON-4.0-specification.pdf) system functions instead of an event-flag structure, `Parker` becomes cheaper to construct and SOLID can share the implementation used by NetBSD and SGX. ping `@kawadakk` r? `@m-ou-se` `@rustbot` label +T-libs
Remove some superfluous type parameters from layout.rs. Specifically remove V, which can always be VariantIdx, and F, which can always be Layout.
…oli-obk Handle discriminant in DataflowConstProp cc `@jachris` r? `@JakobDegen` This PR attempts to extend the DataflowConstProp pass to handle propagation of discriminants. We handle this by adding 2 new variants to `TrackElem`: `TrackElem::Variant` for enum variants and `TrackElem::Discriminant` for the enum discriminant pseudo-place. The difficulty is that the enum discriminant and enum variants may alias each another. This is the issue of the `Option<NonZeroUsize>` test, which is the equivalent of rust-lang/unsafe-code-guidelines#84 with a direct write. To handle that, we generalize the flood process to flood all the potentially aliasing places. In particular: - any write to `(PLACE as Variant)`, either direct or through a projection, floods `(PLACE as OtherVariant)` for all other variants and `discriminant(PLACE)`; - `SetDiscriminant(PLACE)` floods `(PLACE as Variant)` for each variant. This implies that flooding is not hierarchical any more, and that an assignment to a non-tracked place may need to flood a tracked place. This is handled by `for_each_aliasing_place` which generalizes `preorder_invoke`. As we deaggregate enums by putting `SetDiscriminant` last, this allows to propagate the value of the discriminant. This refactor will allow to make rust-lang#107009 able to handle discriminants too.
…rister Fix unintentional UB in ui tests `@matthiaskrgr` found UB in a bunch of the ui tests. This PR fixes a batch of miscellaneous tests I didn't think needed reviewers from a particular part of the project.
…mpiler-errors Avoid ICE when the generic_span is empty Fixes rust-lang#107998 r? `@TaKO8Ki`
…orkingjubilee Shrink size of array benchmarks Might've overdone it with the size of these benchmarks, as there's no need for them to be quite as large. Fixes rust-lang#108011
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@bors r+ rollup=never p=5 |
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⌛ Testing commit b8d1547 with merge 541986d1a381d4a880930d6d8e14c11b7fc952cc... |
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💔 Test failed - checks-actions |
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fnitem #103366 )Failed merges:
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