1 files changed, 4 insertions, 0 deletions
diff --git a/lib/AST/ExprCXX.cpp b/lib/AST/ExprCXX.cpp
index 53be84b20d..5a9de19254 100644
--- a/lib/AST/ExprCXX.cpp
+++ b/lib/AST/ExprCXX.cpp
@@ -214,6 +214,10 @@ bool UnaryTypeTraitExpr::EvaluateTrait() const {
       return cast<CXXRecordDecl>(Record->getDecl())->isPolymorphic();
     }
     return false;
+  case UTT_IsAbstract:
+    if (const RecordType *RT = QueriedType->getAsRecordType())
+      return cast<CXXRecordDecl>(RT->getDecl())->isAbstract();
+    return false;
   }
 }