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-rw-r--r--clang/lib/Sema/SemaTemplateDeduction.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/clang/lib/Sema/SemaTemplateDeduction.cpp b/clang/lib/Sema/SemaTemplateDeduction.cpp
index 327447746c3..46d92313827 100644
--- a/clang/lib/Sema/SemaTemplateDeduction.cpp
+++ b/clang/lib/Sema/SemaTemplateDeduction.cpp
@@ -4453,7 +4453,8 @@ Sema::DeduceAutoType(TypeLoc Type, Expr *&Init, QualType &Result,
/*.IsPack = */ (bool)Type.getAs<PackExpansionTypeLoc>()};
if (!DependentDeductionDepth &&
- (Type.getType()->isDependentType() || Init->isTypeDependent())) {
+ (Type.getType()->isDependentType() || Init->isTypeDependent() ||
+ Init->containsUnexpandedParameterPack())) {
Result = SubstituteDeducedTypeTransform(*this, DependentResult).Apply(Type);
assert(!Result.isNull() && "substituting DependentTy can't fail");
return DAR_Succeeded;
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