From 5fe74396e949b601e54ddb00fa7e486d1be18013 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 26 Sep 2001 22:24:09 +0000
Subject: * select.cc (peek_pipe): REALLY only grab mutex when we actually got
 something from the pipe.

---
 winsup/cygwin/select.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'winsup/cygwin/select.cc')

diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc
index bef4e8ac0..2307e297e 100644
--- a/winsup/cygwin/select.cc
+++ b/winsup/cygwin/select.cc
@@ -454,7 +454,8 @@ peek_pipe (select_record *s, int ignra, HANDLE guard_mutex = NULL)
       select_printf ("%s, PeekNamedPipe failed, %E", fh->get_name ());
       n = -1;
     }
-  else if (guard_mutex && WaitForSingleObject (guard_mutex, 0) != WAIT_OBJECT_0)
+  else if (n && guard_mutex
+	   && WaitForSingleObject (guard_mutex, 0) != WAIT_OBJECT_0)
     {
       select_printf ("%s, couldn't get mutex %p, %E", fh->get_name (),
 	  	     guard_mutex);
-- 
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