From: Erik van der Kouwe <erik@minix3.org>
Date: Mon, 4 Oct 2010 17:53:18 +0000 (+0000)
Subject: make system server vprintf check for NULL
X-Git-Tag: v3.2.0~793
X-Git-Url: http://zhaoyanbai.com/repos/weatherstation.js?a=commitdiff_plain;h=b0eaf0bc279aa0b5097160e1f6ce15e842e47095;p=minix.git

make system server vprintf check for NULL
---

diff --git a/lib/libsys/vprintf.c b/lib/libsys/vprintf.c
index 4a97efe42..2749e400d 100644
--- a/lib/libsys/vprintf.c
+++ b/lib/libsys/vprintf.c
@@ -142,6 +142,7 @@ int vprintf(const char *fmt, va_list argp)
 			/* A string.  The other cases will join in here. */
 		case 's':
 			p= va_arg(argp, char *);
+			if (!p) p = "(null)";
 
 		string_length:
 			for (len= 0; p[len] != 0 && len < max; len++) {}