aaef1a1649
2229: Discr should be read when PatKind is Range This PR fixes an issue related to pattern matching in closures when Edition 2021 is enabled. - If any of the patterns the discr is being matched on is `PatKind::Range` then the discr should be read r? ```@nikomatsakis``` Closes https://github.com/rust-lang/rust/issues/87426
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.