From 33b8663f1b7aef381f6e845a128c71becfbbecde Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 26 Mar 2014 06:34:35 +0000
Subject: parse.y: guard dup string

* parse.y (rb_str_dynamic_intern): prevent a string which may be
  duplicated, from GC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45432 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 parse.y | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/parse.y b/parse.y
index 6ef61d8684..bcc8374a64 100644
--- a/parse.y
+++ b/parse.y
@@ -10667,10 +10667,9 @@ rb_gc_free_dsymbol(VALUE ptr)
 }
 
 VALUE
-rb_str_dynamic_intern(VALUE s)
+rb_str_dynamic_intern(VALUE str)
 {
 #if USE_SYMBOL_GC
-    VALUE str = RB_GC_GUARD(s);
     rb_encoding *enc, *ascii;
     VALUE dsym;
     ID id, type;
@@ -10702,11 +10701,12 @@ rb_str_dynamic_intern(VALUE s)
 
     if (RUBY_DTRACE_SYMBOL_CREATE_ENABLED()) {
 	RUBY_DTRACE_SYMBOL_CREATE(RSTRING_PTR(str), rb_sourcefile(), rb_sourceline());
+	RB_GC_GUARD(str);
     }
 
     return dsym;
 #else
-    return rb_str_intern(s);
+    return rb_str_intern(str);
 #endif
 }
 
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