From da881cad0763c5931a6ffa4bc197bbd96f210b6d Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sun, 29 Aug 2010 16:38:08 +0000
Subject: [PATCH] Use NULL instead of 0 for pointer in example.

MFC after:	3 days
---
 lib/libc/sys/sigaltstack.2 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libc/sys/sigaltstack.2 b/lib/libc/sys/sigaltstack.2
index 6119c6a3abce..d9cb27362592 100644
--- a/lib/libc/sys/sigaltstack.2
+++ b/lib/libc/sys/sigaltstack.2
@@ -104,7 +104,7 @@ if ((sigstk.ss_sp = malloc(SIGSTKSZ)) == NULL)
 	/* error return */
 sigstk.ss_size = SIGSTKSZ;
 sigstk.ss_flags = 0;
-if (sigaltstack(&sigstk,0) < 0)
+if (sigaltstack(&sigstk, NULL) < 0)
 	perror("sigaltstack");
 .Ed
 An alternative approach is provided for programs with signal handlers