X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/552893661babb72c427f5fe21e5a47c6d916af74..58b90cc2d82b068770bd38b5dff41e24a4bfeb37:/data/yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index bc98400a..b06837c0 100644
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -254,16 +254,17 @@ b4_syncline([@oline@], [@ofile@])[
 #  if YYSTACK_USE_ALLOCA
 #   ifdef __GNUC__
 #    define YYSTACK_ALLOC __builtin_alloca
-#   elif defined __BUILTIN_VA_ARG_INCR
+#   elif defined (__BUILTIN_VA_ARG_INCR)
 #    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
-#   elif defined _AIX
+#   elif defined (_AIX)
 #    define YYSTACK_ALLOC __alloca
-#   elif defined _MSC_VER
+#   elif defined (_MSC_VER)
 #    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
 #    define alloca _alloca
 #   else
 #    define YYSTACK_ALLOC alloca
-#    if ! defined (_STDLIB_H) && (defined (__STDC__) || defined (__cplusplus))
+#    if (! defined (_ALLOCA_H) && ! defined (_STDLIB_H) \
+	 && (defined (__STDC__) || defined (__cplusplus)))
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #     ifndef _STDLIB_H
 #      define _STDLIB_H 1