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authorbors <bors@rust-lang.org>2024-02-05 21:36:25 +0000
committerbors <bors@rust-lang.org>2024-02-05 21:36:25 +0000
commitf067fd6084d750f3797f54b71771c5dbc149726f (patch)
tree4dd1eede2b078f8ee37e192ac5a107feb3770f33 /compiler/rustc_trait_selection/src/errors.rs
parentea37e8091fe87ae0a7e204c034e7d55061e56790 (diff)
parent400dc46a05f41ba1e1137f11073cec1951442668 (diff)
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Auto merge of #120313 - Nadrieril:graceful-error, r=compiler-errors
pattern_analysis: Gracefully abort on type incompatibility

This leaves the option for a consumer of the crate to return `Err` instead of panicking on type error. rust-analyzer could use that (e.g. https://github.com/rust-lang/rust-analyzer/issues/15808).

Since the only use of `TypeCx::bug` is in `Constructor::is_covered_by`, it is tempting to return `false` instead of `Err()`, but that would cause "non-exhaustive match" false positives.

r? `@compiler-errors`
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