1 files changed, 4 insertions, 0 deletions
diff --git a/parse.y b/parse.y
index 580088eeab..2e73d64401 100644
--- a/parse.y
+++ b/parse.y
@@ -35,6 +35,10 @@
 #define YYREALLOC(ptr, size)	rb_parser_realloc(parser, (ptr), (size))
 #define YYCALLOC(nelem, size)	rb_parser_calloc(parser, (nelem), (size))
 #define YYFREE(ptr)		rb_parser_free(parser, (ptr))
+#undef malloc
+#undef realloc
+#undef calloc
+#undef free
 #define malloc	YYMALLOC
 #define realloc	YYREALLOC
 #define calloc	YYCALLOC