Correct subtyping relations in pattern checking#20517
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code. Previously we were creating a subtyping relation in the wrong direction. We now just unify types, which is stronger than necessary but turns out fine. Fixes rust-lang#19552. Fixes rust-lang#19997.
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Fixes various safety issues. r? @aturon
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Nit: this should be &'f0 mut Foo<'f1, '_2>? (&'f1 is not a type).
alexcrichton
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Fixes various safety issues. r? @aturon
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Sep 18, 2025
…pzus fix: Only compute unstable paths on nightly toolchains for IDE features
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Fixes various safety issues.
r? @aturon