Index: src/driver/cc1.cc
===================================================================
--- src/driver/cc1.cc	(revision 5ded7395234578d7bb8fba071aabd2c9c3142fa2)
+++ src/driver/cc1.cc	(revision f8b6d921dc9ca65448f121a5c1a5d7ba45f464a6)
@@ -10,6 +10,6 @@
 // Created On       : Fri Aug 26 14:23:51 2005
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jun 10 09:27:37 2016
-// Update Count     : 80
+// Last Modified On : Wed Jan 18 08:14:21 2017
+// Update Count     : 81
 //
 
@@ -169,5 +169,5 @@
 				i += 1;									// and the argument
 
-				// all other flags
+			// all other flags
 
 			} else if ( arg == "-o" ) {
@@ -178,5 +178,5 @@
 				nargs += 1;
 				// CPP flags with an argument
-				if ( arg == "-D" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" ||
+				if ( arg == "-D" || arg == "-U" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" ||
 					 arg == "-include" || arg == "-imacros" || arg == "-idirafter" || arg == "-iprefix" ||
 					 arg == "-iwithprefix" || arg == "-iwithprefixbefore" || arg == "-isystem" || arg == "-isysroot" ) {