parse.y: Remove a code for old yacc

The current parse.y won't compile with yacc since it depends on many
bison's extensions.  Also, configure.ac does not have a check for yacc,
so the macro OLD_YACC is no longer used.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61819 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 9 deletions

diff --git a/parse.y b/parse.y
index 44d1af9c98..ecc94d4d04 100644
--- a/parse.y
+++ b/parse.y
@@ -788,15 +788,6 @@ PRINTF_ARGS(static void parser_compile_error(struct parser_params*, const char *
 # define PARSER_ARG p,
 #endif
 
-/* Older versions of Yacc set YYMAXDEPTH to a very low value by default (150,
-   for instance).  This is too low for Ruby to parse some files, such as
-   date/format.rb, therefore bump the value up to at least Bison's default. */
-#ifdef OLD_YACC
-#ifndef YYMAXDEPTH
-#define YYMAXDEPTH 10000
-#endif
-#endif
-
 static void token_info_push(struct parser_params*, const char *token, const rb_code_location_t *loc);
 static void token_info_pop(struct parser_params*, const char *token, const rb_code_location_t *loc);
 %}