From 0331e42be396bfb85f4f36009629f4199d074300 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 24 Mar 2014 13:19:57 +0000
Subject: parse.y: freeze filename

* parse.y (ripper_initialize): filename can not be modified.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45397 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 parse.y | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'parse.y')

diff --git a/parse.y b/parse.y
index 492fd3da64..8d3df90b0a 100644
--- a/parse.y
+++ b/parse.y
@@ -11445,9 +11445,11 @@ ripper_initialize(int argc, VALUE *argv, VALUE self)
     parser->eofp = Qfalse;
     if (NIL_P(fname)) {
         fname = STR_NEW2("(ripper)");
+	OBJ_FREEZE(fname);
     }
     else {
         StringValue(fname);
+	fname = rb_str_new_frozen(fname);
     }
     parser_initialize(parser);
 
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