From d7f6b873da0885e771515aff8bfa1aafecff90df Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 5 May 2008 11:12:17 +0000
Subject: * io.c (io_fflush): IO#flush problem within threads.  a patch from  
 <s.wanabe at gmail.com> in [ruby-dev:34595].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16297 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog | 5 +++++
 io.c      | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d4a339045b..9453b52f23 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon May  5 20:07:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* io.c (io_fflush): IO#flush problem within threads.  a patch from
+	  <s.wanabe at gmail.com> in [ruby-dev:34595].
+
 Mon May  5 19:58:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* compile.c (defined_expr): protect some expression from
diff --git a/io.c b/io.c
index 4c9a50d80a..6770b41e1c 100644
--- a/io.c
+++ b/io.c
@@ -584,8 +584,8 @@ io_fflush(rb_io_t *fptr)
         return 0;
     }
     if (0 <= r) {
-        fptr->wbuf_off = r;
-        fptr->wbuf_len = r;
+        fptr->wbuf_off += r;
+        fptr->wbuf_len -= r;
         errno = EAGAIN;
     }
     if (rb_io_wait_writable(fptr->fd)) {
-- 
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