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-rw-r--r--lib/Sema/SemaExprCXX.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index 4fc9abd5c9..4efab1b83b 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -2998,7 +2998,7 @@ static bool EvaluateUnaryTypeTrait(Sema &Self, UnaryTypeTrait UTT,
case UTT_IsUnion:
return T->isUnionType();
case UTT_IsClass:
- return T->isClassType() || T->isStructureType();
+ return T->isClassType() || T->isStructureType() || T->isInterfaceType();
case UTT_IsFunction:
return T->isFunctionType();