2 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 71c4803e29..c127a142d7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Feb 20 18:21:41 2006  Tanaka Akira  <akr@m17n.org>
+
+	* io.c (rb_io_reopen): flush before reopening a file.
+	  reported by Mathieu Bouchard.  [ruby-core:7396] 
+
 Mon Feb 20 17:29:50 2006  Tanaka Akira  <akr@m17n.org>
 
 	* mkconfig.rb: generate RbConfig instead of Config.
diff --git a/io.c b/io.c
index dd1058455a..e00325fa0d 100644
--- a/io.c
+++ b/io.c
@@ -3416,6 +3416,10 @@ rb_io_reopen(int argc, VALUE *argv, VALUE file)
 	return file;
     }
 
+    if (fptr->mode & FMODE_WRITABLE) {
+        io_fflush(fptr);
+    }
+
     if (fptr->stdio_file) {
         if (freopen(RSTRING(fname)->ptr, mode, fptr->stdio_file) == 0) {
             rb_sys_fail(fptr->path);