Do not visit impl-trait when looking for self-type elision. #143450
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| r? @SparrowLii rustbot has assigned @SparrowLii. Use |
| This PR changes a file inside |
rustbot added S-waiting-on-review 
compiler-errors requested changes Jul 5, 2025
| self.lifetime.insert(lt_res); | ||
| } | ||
| } else if let TyKind::ImplTrait(..) = ty.kind { | ||
| // Do not attempt to look inside impl-trait. |
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Could you make these FIXMEs that briefly mention the "more principled fix" you mention in the PR description?
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rustbot added S-waiting-on-author | Reminder, once the PR becomes ready for a review, use |
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The linked ICE happens when self-param lifetime elision triggers on a type that has
&Selfappear in an APIT.This PR is the minimal fix: do not attempt to look inside impl-trait. It should be complemented by a more principled fix where we attach the lifetime elision logic to the rib-based resolution logic. This should lead to better error messages for lifetimes that appear in
fn(&mut Self). (The current error is "invalidselfparameter type".)Fixes #122903