Index: src/Parser/TypeData.cc
===================================================================
--- src/Parser/TypeData.cc	(revision f855545d9fde3acff948e4a18f52660d06aa331b)
+++ src/Parser/TypeData.cc	(revision c45b3043143d32253a958105b5b97f4651100bd7)
@@ -10,6 +10,6 @@
 // Created On       : Sat May 16 15:12:51 2015
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Nov  1 20:56:14 2018
-// Update Count     : 623
+// Last Modified On : Fri Nov  2 07:54:26 2018
+// Update Count     : 624
 //
 
@@ -424,5 +424,7 @@
 	  case Basetypeof:
 		os << "base-";
-		__attribute__((fallthrough));
+		#if defined(__GNUC__) && __GNUC__ >= 7
+			__attribute__((fallthrough));
+		#endif
 	  case Typeof:
 		os << "type-of expression ";