===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/ssh-agent.c,v
retrieving revision 1.171
retrieving revision 1.172
diff -u -r1.171 -r1.172
--- src/usr.bin/ssh/ssh-agent.c	2010/11/21 01:01:13	1.171
+++ src/usr.bin/ssh/ssh-agent.c	2011/06/03 01:37:40	1.172
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-agent.c,v 1.171 2010/11/21 01:01:13 djm Exp $ */
+/* $OpenBSD: ssh-agent.c,v 1.172 2011/06/03 01:37:40 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1076,7 +1076,11 @@
 static void
 check_parent_exists(void)
 {
-	if (parent_pid != -1 && kill(parent_pid, 0) < 0) {
+	/*
+	 * If our parent has exited then getppid() will return (pid_t)1,
+	 * so testing for that should be safe.
+	 */
+	if (parent_pid != -1 && getppid() != parent_pid) {
 		/* printf("Parent has died - Authentication agent exiting.\n"); */
 		cleanup_socket();
 		_exit(2);