From 75fcee4a23d5a549f407a0404732e2ccc6b949e1 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 8 Nov 2008 08:32:55 +0000
Subject: [PATCH] * ext/stringio/stringio.c (strio_ungetc): ungetc position
 should   not be changed from 1.8.   [ruby-core:19632]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog               | 5 +++++
 ext/stringio/stringio.c | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 182ae0b6ae..d30f2d631b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Nov  8 17:31:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* ext/stringio/stringio.c (strio_ungetc): ungetc position should
+	  not be changed from 1.8.   [ruby-core:19632]
+
 Sat Nov  8 17:15:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* lib/optparse.rb (OptionParser#make_switch): 1.9 Symbols respond
diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 191c1024c4..4c997dcd04 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -721,7 +721,7 @@ strio_ungetc(VALUE self, VALUE c)
 	}
     }
     /* get logical position */
-    lpos = 0; p = RSTRING_PTR(ptr->string); pend = p + ptr->pos - 1;
+    lpos = 0; p = RSTRING_PTR(ptr->string); pend = p + ptr->pos;
     for (;;) {
 	clen = rb_enc_mbclen(p, pend, enc);
 	if (p+clen >= pend) break;