Don't install default projection bound for return-position impl Trait in trait methods with no body
#113741
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impl Trait in trait methods with no bodyimpl Trait in trait methods with no body
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Makes a lot of sense, r=me after rebasing |
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This is actually blocked on #113704, which I will clean up and write a better explanation for probably on Monday. |
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@bors r=spastorino |
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…-missing-opaque, r=spastorino Don't install default projection bound for return-position `impl Trait` in trait methods with no body This ensures that we never try to project to an opaque type in a trait method that has no body to infer its hidden type, which means we never later call `type_of` on that opaque. This is because opaque types try to reveal their hidden type when proving auto traits. I thought about this a lot, and I think this is a fix that's less likely to introduce other strange downstream ICEs than rust-lang#113461. r? `@spastorino`
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…kingjubilee Rollup of 4 pull requests Successful merges: - rust-lang#95965 (Stabilize const-weak-new) - rust-lang#109075 (Use `LazyLock` to lazily resolve backtraces) - rust-lang#113741 (Don't install default projection bound for return-position `impl Trait` in trait methods with no body) - rust-lang#114268 (Fix empty_write since rust version attribute) r? `@ghost` `@rustbot` modify labels: rollup
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This ensures that we never try to project to an opaque type in a trait method that has no body to infer its hidden type, which means we never later call
type_ofon that opaque. This is because opaque types try to reveal their hidden type when proving auto traits.I thought about this a lot, and I think this is a fix that's less likely to introduce other strange downstream ICEs than #113461.
Fixes #113434
r? @spastorino