2004-12-21  Stepan Kasal  <address@hidden>

	* data/yacc.c:  Don't be too smart, don't define `YYSTACK_ALLOC'
	  as `malloc' unless YYSTACK_USE_ALLOCA was defined to 0.

Index: data/yacc.c
===================================================================
RCS file: /cvsroot/bison/bison/data/yacc.c,v
retrieving revision 1.78
diff -u -r1.78 yacc.c
--- data/yacc.c	20 Dec 2004 03:43:35 -0000	1.78
+++ data/yacc.c	21 Dec 2004 08:11:33 -0000
@@ -229,12 +229,10 @@
 #   define YYSTACK_ALLOC alloca
 #  endif
 # else
-#  if defined (alloca) || defined (_ALLOCA_H)
-#   define YYSTACK_ALLOC alloca
+#  if !defined (alloca) && !defined (_ALLOCA_H) && defined(__GNUC__)
+#   define YYSTACK_ALLOC __builtin_alloca
 #  else
-#   ifdef __GNUC__
-#    define YYSTACK_ALLOC __builtin_alloca
-#   endif
+#   define YYSTACK_ALLOC alloca
 #  endif
 # endif