Use gcc -ansi -pedantic in 9c.  Fix many non-C89-isms.
diff --git a/src/cmd/yacc.c b/src/cmd/yacc.c
index be31686..c15db2e 100644
--- a/src/cmd/yacc.c
+++ b/src/cmd/yacc.c
@@ -98,7 +98,7 @@
 	EMPTY		= 1,
 	WHOKNOWS	= 0,
 	OK		= 1,
-	NOMORE		= -1000,
+	NOMORE		= -1000
 };
 
 	/* macros for getting associativity and precedence levels */