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-rw-r--r--lib/Sema/TreeTransform.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Sema/TreeTransform.h b/lib/Sema/TreeTransform.h
index 2091cffc83..bacf6d5d9b 100644
--- a/lib/Sema/TreeTransform.h
+++ b/lib/Sema/TreeTransform.h
@@ -3365,6 +3365,7 @@ TreeTransform<Derived>::TransformQualifiedType(TypeLocBuilder &TLB,
// Objective-C ARC:
// A lifetime qualifier applied to a substituted template parameter
// overrides the lifetime qualifier from the template argument.
+ const AutoType *AutoTy;
if (const SubstTemplateTypeParmType *SubstTypeParam
= dyn_cast<SubstTemplateTypeParmType>(Result)) {
QualType Replacement = SubstTypeParam->getReplacementType();
@@ -3377,6 +3378,15 @@ TreeTransform<Derived>::TransformQualifiedType(TypeLocBuilder &TLB,
SubstTypeParam->getReplacedParameter(),
Replacement);
TLB.TypeWasModifiedSafely(Result);
+ } else if ((AutoTy = dyn_cast<AutoType>(Result)) && AutoTy->isDeduced()) {
+ // 'auto' types behave the same way as template parameters.
+ QualType Deduced = AutoTy->getDeducedType();
+ Qualifiers Qs = Deduced.getQualifiers();
+ Qs.removeObjCLifetime();
+ Deduced = SemaRef.Context.getQualifiedType(Deduced.getUnqualifiedType(),
+ Qs);
+ Result = SemaRef.Context.getAutoType(Deduced);
+ TLB.TypeWasModifiedSafely(Result);
} else {
// Otherwise, complain about the addition of a qualifier to an
// already-qualified type.