From 30caac0569067a4cc59a77c99db1c52fd8001591 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Mon, 25 Aug 2008 17:27:06 +0000
Subject: add comments

---
 winsup/cygwin/fhandler.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index 49af86f9e..a6eec3f4a 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -1740,6 +1740,10 @@ err:
   __seterrno_from_win_error (err);
   res = -1;
 out:
+  /* Make sure the event is unsignalled (this is a potential race in a multi-threaded
+     app.  Sigh.).  Must do this after WFMO and GetOverlappedResult or suffer
+     occasional sporadic problems:
+	http://cygwin.com/ml/cygwin/2008-08/msg00511.html */
   ResetEvent (get_overlapped ()->hEvent);
   if (writing && (err == ERROR_NO_DATA || err == ERROR_BROKEN_PIPE))
     raise (SIGPIPE);
-- 
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