diff options
Diffstat (limited to 'compiler/rustc_pattern_analysis/src')
| -rw-r--r-- | compiler/rustc_pattern_analysis/src/constructor.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/rustc_pattern_analysis/src/constructor.rs b/compiler/rustc_pattern_analysis/src/constructor.rs index 716ccdd4dcd..3bca7894a29 100644 --- a/compiler/rustc_pattern_analysis/src/constructor.rs +++ b/compiler/rustc_pattern_analysis/src/constructor.rs @@ -979,7 +979,8 @@ impl ConstructorSet { && !(pcx.is_top_level && matches!(self, Self::NoConstructors)) { // Treat all missing constructors as nonempty. - missing.extend(missing_empty.drain(..)); + // This clears `missing_empty`. + missing.append(&mut missing_empty); } SplitConstructorSet { present, missing, missing_empty } |