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Deeply normalize obligations in refining_impl_trait #121745

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We somewhat awkwardly use semantic comparison when checking the refining_impl_trait lint. This relies on us being able to normalize bounds eagerly to avoid cases where an unnormalized alias is not considered equal to a normalized alias. Since normalize in the new solver is a noop, let's use deeply_normalize instead.

r? lcnr

cc @tmandry, this should fix your bug lol

@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 28, 2024
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rustbot commented Feb 28, 2024

Some changes occurred in engine.rs, potentially modifying the public API of ObligationCtxt.

cc @lcnr, @compiler-errors

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lcnr commented Feb 29, 2024

@bors r+ rollup

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bors commented Feb 29, 2024

📌 Commit 75e15f7 has been approved by lcnr

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 Feb 29, 2024
jhpratt added a commit to jhpratt/rust that referenced this pull request Feb 29, 2024
…t-deeply-norm, r=lcnr

Deeply normalize obligations in `refining_impl_trait`

We somewhat awkwardly use semantic comparison when checking the `refining_impl_trait` lint. This relies on us being able to normalize bounds eagerly to avoid cases where an unnormalized alias is not considered equal to a normalized alias. Since `normalize` in the new solver is a noop, let's use `deeply_normalize` instead.

r? lcnr

cc `@tmandry,` this should fix your bug lol
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 29, 2024
Rollup of 11 pull requests

Successful merges:

 - rust-lang#119748 (Increase visibility of `join_path` and `split_paths`)
 - rust-lang#120291 (Have `String` use `SliceIndex` impls from `str`)
 - rust-lang#121130 (Suggest moving definition if non-found macro_rules! is defined later)
 - rust-lang#121723 (Two diagnostic things)
 - rust-lang#121740 (Changing some attributes to only_local.)
 - rust-lang#121745 (Deeply normalize obligations in `refining_impl_trait`)
 - rust-lang#121748 (Restore the standard library review rotation to its former glory)
 - rust-lang#121768 (Implement unwind safety for Condvar on all platforms )
 - rust-lang#121777 (Fix typo in `rustc_passes/messages.ftl`)
 - rust-lang#121778 (Document potential memory leak in unbounded channel)
 - rust-lang#121779 (Remove unused diagnostic struct)

r? `@ghost`
`@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 29, 2024
Rollup of 10 pull requests

Successful merges:

 - rust-lang#119748 (Increase visibility of `join_path` and `split_paths`)
 - rust-lang#120291 (Have `String` use `SliceIndex` impls from `str`)
 - rust-lang#121723 (Two diagnostic things)
 - rust-lang#121740 (Changing some attributes to only_local.)
 - rust-lang#121745 (Deeply normalize obligations in `refining_impl_trait`)
 - rust-lang#121748 (Restore the standard library review rotation to its former glory)
 - rust-lang#121768 (Implement unwind safety for Condvar on all platforms )
 - rust-lang#121777 (Fix typo in `rustc_passes/messages.ftl`)
 - rust-lang#121778 (Document potential memory leak in unbounded channel)
 - rust-lang#121779 (Remove unused diagnostic struct)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 2335138 into rust-lang:master Feb 29, 2024
11 checks passed
@rustbot rustbot added this to the 1.78.0 milestone Feb 29, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Feb 29, 2024
Rollup merge of rust-lang#121745 - compiler-errors:refining-impl-trait-deeply-norm, r=lcnr

Deeply normalize obligations in `refining_impl_trait`

We somewhat awkwardly use semantic comparison when checking the `refining_impl_trait` lint. This relies on us being able to normalize bounds eagerly to avoid cases where an unnormalized alias is not considered equal to a normalized alias. Since `normalize` in the new solver is a noop, let's use `deeply_normalize` instead.

r? lcnr

cc ``@tmandry,`` this should fix your bug lol
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4 participants