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Never say "Trait is implemented for {type error}" #121803

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merged 1 commit into from
Mar 2, 2024

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When a trait bound error occurs, we look for alternative types that would have made the bound succeed. For some reason {type error} sometimes would appear as a type that would do so.

We now remove {type error} from the list in every case to avoid nonsensical notes.

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rustbot commented Feb 29, 2024

r? @spastorino

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Feb 29, 2024
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For some reason {type error} sometimes would appear as a type that would do so.

If you're curious, this is because {type error} unifies with all types. We filter them out in selection, but not when we're manually matching impls here.

When a trait bound error occurs, we look for alternative types that
would have made the bound succeed. For some reason `{type error}`
sometimes would appear as a type that would do so.

We now remove `{type error}` from the list in every case to avoid
nonsensical `note`s.
@estebank estebank force-pushed the dont-mention-type-error-e0277 branch from 1c131cb to dab3d5b Compare March 1, 2024 02:12
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r=me when ci is finished

@compiler-errors compiler-errors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 1, 2024
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estebank commented Mar 1, 2024

@bors r=compiler-errors

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bors commented Mar 1, 2024

📌 Commit dab3d5b has been approved by compiler-errors

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Mar 1, 2024
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@bors rollup=always

bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 2, 2024
…iaskrgr

Rollup of 11 pull requests

Successful merges:

 - rust-lang#111505 (Made `INVALID_DOC_ATTRIBUTES` lint deny by default)
 - rust-lang#120305 (Delete line if suggestion would replace it with an empty line)
 - rust-lang#121153 (Suggest removing superfluous semicolon when statements used as expression)
 - rust-lang#121497 (`-Znext-solver=coherence`: suggest increasing recursion limit)
 - rust-lang#121634 (Clarify behavior of slice prefix/suffix operations in case of equality)
 - rust-lang#121706 (match lowering: Remove hacky branch in sort_candidate)
 - rust-lang#121730 (Add profiling support to AIX)
 - rust-lang#121750 (match lowering: Separate the `bool` case from other integers in `TestKind`)
 - rust-lang#121803 (Never say "`Trait` is implemented for `{type error}`")
 - rust-lang#121811 (Move sanitizer ui tests to sanitizer directory)
 - rust-lang#121824 (Implement missing ABI structures in StableMIR)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 06ca0de into rust-lang:master Mar 2, 2024
11 checks passed
@rustbot rustbot added this to the 1.78.0 milestone Mar 2, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Mar 2, 2024
Rollup merge of rust-lang#121803 - estebank:dont-mention-type-error-e0277, r=compiler-errors

Never say "`Trait` is implemented for `{type error}`"

When a trait bound error occurs, we look for alternative types that would have made the bound succeed. For some reason `{type error}` sometimes would appear as a type that would do so.

We now remove `{type error}` from the list in every case to avoid nonsensical `note`s.
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6 participants