diff --git a/utils/TableGen/ClangAttrEmitter.cpp b/utils/TableGen/ClangAttrEmitter.cpp
index c773e57f942..ee606e0e50f 100644
--- a/utils/TableGen/ClangAttrEmitter.cpp
+++ b/utils/TableGen/ClangAttrEmitter.cpp
@@ -355,7 +355,7 @@ namespace {
   };
 
   class EnumArgument : public Argument {
-    StringRef type;
+    std::string type;
     std::vector<StringRef> values, enums;
   public:
     EnumArgument(Record &Arg, StringRef Attr)