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remove unnecessary eval_verify_bound #133810

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@lcnr lcnr commented Dec 3, 2024

This does not impact any tests. I feel like any cases where this could useful should instead be fixed by a general improvement to eval_verify_bound to avoid having to promote this TypeTest in the first place 🤔

r? types cc @nikomatsakis

@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 Dec 3, 2024
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r=me

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@bors r+

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bors commented Dec 3, 2024

📌 Commit a3181fa 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-review Status: Awaiting review from the assignee but also interested parties. labels Dec 3, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request Dec 4, 2024
…iaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#133651 (Update `NonZero` and `NonNull` to not field-project (per MCP#807))
 - rust-lang#133764 (rustdoc: Rename `set_back_info` to `restore_module_data`.)
 - rust-lang#133784 (Fix MutVisitor's default implementations to visit Stmt's and BinOp's spans)
 - rust-lang#133798 (stop replacing bivariant args with `'static` when computing closure requirements)
 - rust-lang#133804 (Improve code for FileName retrieval in rustdoc)
 - rust-lang#133817 (Use `eprintln` instead of `println` in bootstrap/compiletest/tidy)

Failed merges:

 - rust-lang#133810 (remove unnecessary `eval_verify_bound`)

r? `@ghost`
`@rustbot` modify labels: rollup
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bors commented Dec 4, 2024

☔ The latest upstream changes (presumably #133841) made this pull request unmergeable. Please resolve the merge conflicts.

@bors bors 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-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Dec 4, 2024
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Did you look at the issue that was cited @lcnr ?

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I have to bring this back into cache but I can imagine cases where the closure knows about regions and things that the caller doesn't. Is this already excluding local regions related to the body of the closure?

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lcnr commented Dec 4, 2024

I have 🤔 the affected test no longer relies on this.

We only ever try to promote type tests which we fail to prove locally. This check would only apply if we fail to prove Type: 'x but successfully prove Type: 'universal while it's known that 'universal: 'x. I feel like if we ever encounter such a case, we should instead improve how we prove type checks.

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5 participants