diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/scala/tools/nsc/transform/patmat/MatchAnalysis.scala | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/patmat/MatchAnalysis.scala b/src/compiler/scala/tools/nsc/transform/patmat/MatchAnalysis.scala index 2893cbdf45..894f959319 100644 --- a/src/compiler/scala/tools/nsc/transform/patmat/MatchAnalysis.scala +++ b/src/compiler/scala/tools/nsc/transform/patmat/MatchAnalysis.scala @@ -149,14 +149,15 @@ trait TreeAndTypeAnalysis extends Debugging { object typeArgsToWildcardsExceptArray extends TypeMap { // SI-6771 dealias would be enough today, but future proofing with the dealiasWiden. // See neg/t6771b.scala for elaboration - def apply(tp: Type): Type = tp.dealiasWiden match { + def apply(tp: Type): Type = tp.dealias match { case TypeRef(pre, sym, args) if args.nonEmpty && (sym ne ArrayClass) => TypeRef(pre, sym, args map (_ => WildcardType)) case _ => mapOver(tp) } } - debug.patmatResult(s"checkableType($tp)")(typeArgsToWildcardsExceptArray(tp)) + val result = typeArgsToWildcardsExceptArray(tp) + debug.patmatResult(s"checkableType($tp)")(result) } // a type is "uncheckable" (for exhaustivity) if we don't statically know its subtypes (i.e., it's unsealed) |