Index: gcc/config/rs6000/rs6000.h
===================================================================
--- gcc/config/rs6000/rs6000.h	(revision 122428)
+++ gcc/config/rs6000/rs6000.h	(working copy)
@@ -1277,7 +1277,7 @@
 
 /* Define this if the above stack space is to be considered part of the
    space allocated by the caller.  */
-#define OUTGOING_REG_PARM_STACK_SPACE
+#define OUTGOING_REG_PARM_STACK_SPACE 1
 
 /* This is the difference between the logical top of stack and the actual sp.