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asprintf is easier and safer

This commit is contained in:
itojun 2003-07-14 09:29:21 +00:00
parent 2777b2aa10
commit eea9ee0720
1 changed files with 5 additions and 8 deletions
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13
usr.bin/uniq/uniq.c
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@ -1,4 +1,4 @@
/* $NetBSD: uniq.c,v 1.9 1998/12/19 23:23:49 christos Exp $ */
/* $NetBSD: uniq.c,v 1.10 2003/07/14 09:29:21 itojun Exp $ */
/*
* Copyright (c) 1989, 1993
@ -46,7 +46,7 @@ __COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
#if 0
static char sccsid[] = "@(#)uniq.c 8.3 (Berkeley) 5/4/95";
#endif
__RCSID("$NetBSD: uniq.c,v 1.9 1998/12/19 23:23:49 christos Exp $");
__RCSID("$NetBSD: uniq.c,v 1.10 2003/07/14 09:29:21 itojun Exp $");
#endif /* not lint */
#include <err.h>
@ -220,7 +220,6 @@ void
obsolete(argv)
char *argv[];
{
int len;
char *ap, *p, *start;
while ((ap = *++argv) != NULL) {
@ -236,12 +235,10 @@ obsolete(argv)
* Digit signifies an old-style option. Malloc space for dash,
* new option and argument.
*/
len = strlen(ap);
if ((start = p = malloc(len + 3)) == NULL)
asprintf(&p, "-%c%s", ap[0] == '+' ? 's' : 'f', ap + 1);
if (!p)
err(1, "malloc");
*p++ = '-';
*p++ = ap[0] == '+' ? 's' : 'f';
(void)strcpy(p, ap + 1);
start = p;
*argv = start;
}
}