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Test absense of command differently to avoid null pointer deference 

when only whitespaces are given.
This commit is contained in:
enami 2001-11-14 03:01:15 +00:00
parent d67d6cd1bb
commit 6737e7d6b2
1 changed files with 4 additions and 4 deletions
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8
usr.sbin/lpr/lpc/lpc.c
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@ -1,4 +1,4 @@
/* $NetBSD: lpc.c,v 1.10 2000/08/24 17:40:16 sommerfeld Exp $ */
/* $NetBSD: lpc.c,v 1.11 2001/11/14 03:01:15 enami Exp $ */
/*
* Copyright (c) 1983, 1993
@ -41,7 +41,7 @@ __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
#if 0
static char sccsid[] = "@(#)lpc.c 8.3 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: lpc.c,v 1.10 2000/08/24 17:40:16 sommerfeld Exp $");
__RCSID("$NetBSD: lpc.c,v 1.11 2001/11/14 03:01:15 enami Exp $");
#endif
#endif /* not lint */
@ -156,9 +156,9 @@ cmdscanner(top)
}
if (fgets(cmdline, MAX_CMDLINE, stdin) == 0)
quit(0, NULL);
if (cmdline[0] == 0 || cmdline[0] == '\n')
break;
makeargv();
if (margc == 0)
break;
c = getcmd(margv[0]);
if (c == (struct cmd *)-1) {
printf("?Ambiguous command\n");