diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 3dd149067..1658c0870 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-14  Corinna Vinschen  <corinna@vinschen.de>
+
+	* pipe.cc (fhandler_pipe::open): Duplicate content of opened pipe
+	fhandler before calling dup method.
+
 2010-08-13  Corinna Vinschen  <corinna@vinschen.de>
 
 	* cygheap.h (class cwdstuff): Make drive_length private.
diff --git a/winsup/cygwin/pipe.cc b/winsup/cygwin/pipe.cc
index 29bd73205..2f3bebe2c 100644
--- a/winsup/cygwin/pipe.cc
+++ b/winsup/cygwin/pipe.cc
@@ -86,6 +86,9 @@ fhandler_pipe::open (int flags, mode_t mode)
 	      set_errno (EACCES);
 	      return 0;
 	    }
+	  *this = *(fhandler_pipe *) cfd;
+	  set_io_handle (NULL);
+	  pc.reset_conv_handle ();
 	  if (!cfd->dup (this))
 	    return 1;
 	  return 0;