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Don't ICE in resolve_bound_vars when associated return-type bounds are in bad positions #113426

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merged 1 commit into from Jul 8, 2023

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I couldn't find a better way to avoid hitting this ICE, so let's just delay it.

The problem is that we really shouldn't even be trying to visit associated type bounds in resolve_bound_vars when they show up in impl headers, but we don't have enough context to do this.

Fixes #113423

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rustbot commented Jul 6, 2023

r? @fee1-dead

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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 Jul 6, 2023
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r=me

Comment on lines 341 to 342
// though this may happen when we call `poly_trait_ref_binder_info` with
// an (erroneous) associated return type bound in an impl header.
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Link to the issue or the ui test

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@bors r+ rollup

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bors commented Jul 7, 2023

📌 Commit b7191d8 has been approved by fee1-dead

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 Jul 7, 2023
bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 8, 2023
…mpiler-errors

Rollup of 8 pull requests

Successful merges:

 - rust-lang#113413 (Add needs-triage to all new issues)
 - rust-lang#113426 (Don't ICE in `resolve_bound_vars` when associated return-type bounds are in bad positions)
 - rust-lang#113427 (Remove `variances_of` on RPITIT GATs, remove its one use-case)
 - rust-lang#113441 (miri: check that assignments do not self-overlap)
 - rust-lang#113453 (Remove unused from_method from rustc_on_unimplemented)
 - rust-lang#113456 (Avoid calling report_forbidden_specialization for RPITITs)
 - rust-lang#113466 (Update cargo)
 - rust-lang#113467 (Fix comment of `fn_can_unwind`)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit a13b57e into rust-lang:master Jul 8, 2023
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@rustbot rustbot added this to the 1.72.0 milestone Jul 8, 2023
@compiler-errors compiler-errors deleted the rtn-in-impl-header branch August 11, 2023 20:18
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Successfully merging this pull request may close these issues.

ice: assertion failed: supertrait_bound_vars.is_empty()'
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