[src/trunk]: src/sys/arch/mvme68k/stand/bugcrt Fix a (mostly harmless) NULL d...

[scw <scw%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9d2a23d0803f
branches:  trunk
changeset: 476506:9d2a23d0803f
user:      scw <scw%NetBSD.org@localhost>
date:      Sat Sep 18 09:39:55 1999 +0000

description:
Fix a (mostly harmless) NULL de-reference when no boot args supplied.

diffstat:

 sys/arch/mvme68k/stand/bugcrt/bugcrt.c |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (23 lines):

diff -r 77c530e29e06 -r 9d2a23d0803f sys/arch/mvme68k/stand/bugcrt/bugcrt.c
--- a/sys/arch/mvme68k/stand/bugcrt/bugcrt.c    Sat Sep 18 09:37:35 1999 +0000
+++ b/sys/arch/mvme68k/stand/bugcrt/bugcrt.c    Sat Sep 18 09:39:55 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bugcrt.c,v 1.3 1996/05/19 19:51:24 chuck Exp $ */
+/*     $NetBSD: bugcrt.c,v 1.4 1999/09/18 09:39:55 scw Exp $   */
 
 #include <sys/types.h>
 #include <machine/prom.h>
@@ -35,7 +35,12 @@
        bugargs.arg_end = arg_end;
        bugargs.nbarg_start = nbarg_start;
        bugargs.nbarg_end = nbarg_end;
-       *bugargs.arg_end = 0;
+
+       /*
+        * Be sure not to de-reference NULL
+        */
+       if ( bugargs.arg_end )
+               *bugargs.arg_end = 0;
 
        bzero(&edata, (int)&end-(int)&edata);
        id = mvmeprom_getbrdid();