From ee159271dd036aef604ddf7687a6923f524b7d70 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 12 Feb 2009 08:17:53 +0000
Subject: * ext/stringio/stringio.c (strio_ungetc): calculates new position  
 before reallocation.  [Bug#1099]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/stringio/stringio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'ext')

diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 4ff0e36c69..ce1d55fd46 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -728,8 +728,9 @@ strio_ungetc(VALUE self, VALUE c)
 	p += clen;
 	lpos++;
     }
+    clen = p - RSTRING_PTR(ptr->string);
     rb_str_update(ptr->string, lpos, ptr->pos ? 1 : 0, c);
-    ptr->pos = p - RSTRING_PTR(ptr->string);
+    ptr->pos = clen;
 
     return Qnil;
 }
-- 
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