--- lib/clang/include/clang/Config/config.h	(revision 337454)
+++ lib/clang/include/clang/Config/config.h	(working copy)
@@ -16,7 +16,7 @@ 
 /* #undef CLANG_DEFAULT_STD_C */
 
 /* Default C++/ObjC++ standard to use. */
-/* #undef CLANG_DEFAULT_STD_CXX */
+#define CLANG_DEFAULT_STD_CXX LangStandard::lang_gnucxx98
 
 /* Default C++ stdlib to use. */
 #define CLANG_DEFAULT_CXX_STDLIB ""