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Rollup of 9 pull requests #120662
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Rollup of 9 pull requests #120662
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and bless a test I missed
Co-authored-by: Urgau <3616612+Urgau@users.noreply.github.com>
When encountering ```rust fn f<T>(a: T, b: T) -> std::cmp::Ordering { a.cmp(&b) //~ ERROR E0599 } ``` output ``` error[E0599]: no method named `cmp` found for type parameter `T` in the current scope --> $DIR/method-on-unbounded-type-param.rs:2:7 | LL | fn f<T>(a: T, b: T) -> std::cmp::Ordering { | - method `cmp` not found for this type parameter LL | a.cmp(&b) | ^^^ method cannot be called on `T` due to unsatisfied trait bounds | = help: items from traits can only be used if the type parameter is bounded by the trait help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | LL | fn f<T: Ord>(a: T, b: T) -> std::cmp::Ordering { | +++++ LL | fn f<T: Iterator>(a: T, b: T) -> std::cmp::Ordering { | ++++++++++ ``` Fix rust-lang#120186.
When a method not found on a type parameter could have been provided by any of multiple traits, suggest each trait individually, instead of a single suggestion to restrict the type parameter with *all* of them. Before: ``` error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 | LL | (&a).cmp(&b) | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `T: Ord` which is required by `&T: Ord` `&T: Iterator` which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` help: consider restricting the type parameters to satisfy the trait bounds | LL | fn g<T>(a: T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { | +++++++++++++++++++++++++ ``` After: ``` error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 | LL | (&a).cmp(&b) | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `T: Ord` which is required by `&T: Ord` `&T: Iterator` which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` = help: items from traits can only be used if the type parameter is bounded by the trait help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | LL | fn g<T: Ord>(a: T, b: T) -> std::cmp::Ordering { | +++++ LL | fn g<T: Iterator>(a: T, b: T) -> std::cmp::Ordering { | ++++++++++ ``` Fix rust-lang#108428.
…peof` expression
…as already tainted
It doesn't affect behaviour, but makes sense with (a) `FailureNote` having `()` as its emission guarantee, and (b) in `Level` the `is_error` levels now are all listed before the non-`is_error` levels.
I.e. `Bug` and `Fatal` level diagnostics are never downgraded.
- Combine two different blocks involving `diagnostic.level.get_expectation_id()` into one. - Combine several `if`s involving `diagnostic.level` into a single `match`. This requires reordering some of the operations, but this has no functional effect.
The two kinds of delayed bug have quite different semantics so a stronger conceptual separation is nice. (`is_error` is a good example, because the two kinds have different behaviour.) The commit also moves the `DelayedBug` variant after `Error` in `Level`, to reflect the fact that it's weaker than `Error` -- it might trigger an error but also might not. (The pre-existing `downgrade_to_delayed_bug` function also reflects the notion that delayed bugs are lower/after normal errors.) Plus it condenses some of the comments on `Level` into a table, for easier reading, and introduces `can_be_top_or_sub` to indicate which levels can be used in top-level diagnostics vs. subdiagnostics. Finally, it renames `DiagCtxtInner::span_delayed_bugs` as `DiagCtxtInner::delayed_bugs`. The `span_` prefix is unnecessary because some delayed bugs don't have a span.
To send a diagnostic from a codegen thread to the main thread, `SharedEmitter` currently converts the `rustc_errors::Diagnostic` into a one or more `rustc_codegen_ssa::Diagnostic`s, sends them, and then `SharedEmitterMain` reconstructs them at the other end into a `rustc_errors::Diagnostic`. This is a lossy operation, because of differences between the two `Diagnostic` types. Instead we can just clone the `rustc_errors::Diagnostic` and send it directly. Maybe in the past `rustc_errors::Diagnostic` wasn't `Send`? But it works now. Much simpler and nicer.
It's now always paired with a `SharedEmitterMessage::Diagnostic`, so the two message kinds can be combined.
All the other `emit`/`emit_diagnostic` methods were recently made consuming (e.g. rust-lang#119606), but this one wasn't. But it makes sense to. Much of this is straightforward, and lots of `clone` calls are avoided. There are a couple of tricky bits. - `Emitter::primary_span_formatted` no longer takes a `Diagnostic` and returns a pair. Instead it takes the two fields from `Diagnostic` that it used (`span` and `suggestions`) as `&mut`, and modifies them. This is necessary to avoid the cloning of `diag.children` in two emitters. - `from_errors_diagnostic` is rearranged so various uses of `diag` occur before the consuming `emit_diagnostic` call.
…param, r=nnethercote Account for unbounded type param receiver in suggestions When encountering ```rust fn f<T>(a: T, b: T) -> std::cmp::Ordering { a.cmp(&b) //~ ERROR E0599 } ``` output ``` error[E0599]: no method named `cmp` found for type parameter `T` in the current scope --> $DIR/method-on-unbounded-type-param.rs:2:7 | LL | fn f<T>(a: T, b: T) -> std::cmp::Ordering { | - method `cmp` not found for this type parameter LL | a.cmp(&b) | ^^^ method cannot be called on `T` due to unsatisfied trait bounds | = help: items from traits can only be used if the type parameter is bounded by the trait help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | LL | fn f<T: Ord>(a: T, b: T) -> std::cmp::Ordering { | +++++ LL | fn f<T: Iterator>(a: T, b: T) -> std::cmp::Ordering { | ++++++++++ ``` Fix rust-lang#120186.
…, r=petrochenkov update indirect structural match lints to match RFC and to show up for dependencies This is a large step towards implementing rust-lang/rfcs#3535. We currently have five lints related to "the structural match situation": - nontrivial_structural_match - indirect_structural_match - pointer_structural_match - const_patterns_without_partial_eq - illegal_floating_point_literal_pattern This PR concerns the first 3 of them. (The 4th already is set up to show for dependencies, and the 5th is removed by rust-lang#116284.) nontrivial_structural_match is being removed as per the RFC; the other two are enabled to show up in dependencies. Fixes rust-lang#73448 by removing the affected analysis.
…ame, r=Urgau,Nilstrieb Suggest name value cfg when only value is used for check-cfg Fixes rust-lang#120427 r? ``````@Nilstrieb``````
Account for non-overlapping unmet trait bounds in suggestion When a method not found on a type parameter could have been provided by any of multiple traits, suggest each trait individually, instead of a single suggestion to restrict the type parameter with *all* of them. Before: ``` error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 | LL | (&a).cmp(&b) | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `T: Ord` which is required by `&T: Ord` `&T: Iterator` which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` help: consider restricting the type parameters to satisfy the trait bounds | LL | fn g<T>(a: T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { | +++++++++++++++++++++++++ ``` After: ``` error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 | LL | (&a).cmp(&b) | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `T: Ord` which is required by `&T: Ord` `&T: Iterator` which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` = help: items from traits can only be used if the type parameter is bounded by the trait help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | LL | fn g<T: Ord>(a: T, b: T) -> std::cmp::Ordering { | +++++ LL | fn g<T: Iterator>(a: T, b: T) -> std::cmp::Ordering { | ++++++++++ ``` Fix rust-lang#108428. Follow up to rust-lang#120396, only last commit is relevant.
…i-obk Some cleanups around diagnostic levels. Plus some refactoring in and around diagnostic levels and emission. Details in the individual commit logs. r? `@oli-obk`
…ructors, r=dtolnay,oli-obk Make `NonZero` constructors generic. This makes `NonZero` constructors generic, so that `NonZero::new` can be used without turbofish syntax. Tracking issue: rust-lang#120257 ~~I cannot figure out how to make this work with `const` traits. Not sure if I'm using it wrong or whether there's a bug:~~ ```rust 101 | if n == T::ZERO { | ^^^^^^^^^^^^ expected `host`, found `true` | = note: expected constant `host` found constant `true` ``` r? ```@dtolnay```
…ochenkov Switch OwnedStore handle count to AtomicU32 This is already panics if overflowing a u32, so let's use the smaller int size to save a tiny bit of memory.
Continue to borrowck even if there were previous errors but only from the perspective of the whole compiler. Individual items should not get borrowcked if their MIR is tainted by errors. r? ```@estebank``` ```@nnethercote```
…handling, r=estebank Simplify codegen diagnostic handling Some nice improvements. Details in the individual commit logs. r? `@estebank`
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#120396 (Account for unbounded type param receiver in suggestions) - rust-lang#120423 (update indirect structural match lints to match RFC and to show up for dependencies) - rust-lang#120435 (Suggest name value cfg when only value is used for check-cfg) - rust-lang#120507 (Account for non-overlapping unmet trait bounds in suggestion) - rust-lang#120520 (Some cleanups around diagnostic levels.) - rust-lang#120521 (Make `NonZero` constructors generic.) - rust-lang#120527 (Switch OwnedStore handle count to AtomicU32) - rust-lang#120550 (Continue to borrowck even if there were previous errors) - rust-lang#120575 (Simplify codegen diagnostic handling) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
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consuming. #120575 (Simplify codegen diagnostic handling)r? @ghost
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