diff options
Diffstat (limited to 'compiler/rustc_pattern_analysis/src/usefulness.rs')
| -rw-r--r-- | compiler/rustc_pattern_analysis/src/usefulness.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/rustc_pattern_analysis/src/usefulness.rs b/compiler/rustc_pattern_analysis/src/usefulness.rs index 11ebbea07fa..53638f2a57d 100644 --- a/compiler/rustc_pattern_analysis/src/usefulness.rs +++ b/compiler/rustc_pattern_analysis/src/usefulness.rs @@ -702,6 +702,7 @@ //! - `ui/consts/const_in_pattern` //! - `ui/rfc-2008-non-exhaustive` //! - `ui/half-open-range-patterns` +//! - `ui/pattern/deref-patterns` //! - probably many others //! //! I (Nadrieril) prefer to put new tests in `ui/pattern/usefulness` unless there's a specific @@ -866,7 +867,8 @@ impl PlaceValidity { /// inside `&` and union fields where validity is reset to `MaybeInvalid`. fn specialize<Cx: PatCx>(self, ctor: &Constructor<Cx>) -> Self { // We preserve validity except when we go inside a reference or a union field. - if matches!(ctor, Constructor::Ref | Constructor::UnionField) { + if matches!(ctor, Constructor::Ref | Constructor::DerefPattern(_) | Constructor::UnionField) + { // Validity of `x: &T` does not imply validity of `*x: T`. MaybeInvalid } else { |