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AST: Update TypeBase::mayHaveSuperclass() for subclass existentials

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Slava Pestov
2017-04-10 00:25:58 -07:00
parent 473faf1eed
commit b1d22ffad2
1 changed files with 5 additions and 0 deletions
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5
include/swift/AST/Types.h
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@@ -4556,9 +4556,14 @@ inline bool TypeBase::mayHaveSuperclass() {
if (getClassOrBoundGenericClass())
return true;
// FIXME: requiresClass() is not the same as having an explicit superclass;
// is this wrong?
if (auto archetype = getAs<ArchetypeType>())
return (bool)archetype->requiresClass();
if (isExistentialType())
return (bool)getSuperclass(nullptr);
return is<DynamicSelfType>();
}