ytab.sed: work around

* tool/ytab.sed: work around for platforms where vairadic macro is
  not available.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53099 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 19e5bb8a76..4c418d36b2 100644
--- a/parse.y
+++ b/parse.y
@@ -48,6 +48,7 @@
 # define YYFPRINTF(f, fmt, ...) rb_parser_printf(parser, fmt, ##__VA_ARGS__)
 #else
 # define YYFPRINTF		rb_parser_printf
+# undef stderr
 # define stderr 		parser
 #endif
 #undef malloc