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Add missing case to couldInstantiateTypeVar #11789

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Merged
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Mar 17, 2021
Merged

Add missing case to couldInstantiateTypeVar #11789

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3 changes: 2 additions & 1 deletion compiler/src/dotty/tools/dotc/typer/Inferencing.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,7 @@ object Inferencing {
case AppliedType(tycon, args) =>
// The argument in `args` that may potentially appear directly as result
// and thereby influence the members of this type
def argsInResult: List[Type] = tycon match
def argsInResult: List[Type] = tycon.stripTypeVar match
case tycon: TypeRef =>
tycon.info match
case MatchAlias(_) => args
Expand All @@ -114,6 +114,7 @@ object Inferencing {
}.toList
case _ => Nil
case _ => Nil
case _ => Nil
couldInstantiateTypeVar(tycon)
|| argsInResult.exists(couldInstantiateTypeVar)
case RefinedType(parent, _, _) =>
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