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Coverity CID 2534: Avoid use after free; this cannot really happen, but

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coverity cannot figure it out.
This commit is contained in:
christos 2006-05-23 01:16:33 +00:00
parent 1fc5ea78ff
commit 1c2d89173e
1 changed files with 6 additions and 3 deletions
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9
usr.sbin/ac/ac.c
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@ -1,4 +1,4 @@
/* $NetBSD: ac.c,v 1.21 2005/03/16 01:41:20 xtraeme Exp $ */
/* $NetBSD: ac.c,v 1.22 2006/05/23 01:16:33 christos Exp $ */
/*
* Copyright (c) 1994 Christopher G. Demetriou
@ -49,7 +49,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: ac.c,v 1.21 2005/03/16 01:41:20 xtraeme Exp $");
__RCSID("$NetBSD: ac.c,v 1.22 2006/05/23 01:16:33 christos Exp $");
#endif
#include <sys/types.h>
@ -425,8 +425,11 @@ log_out(struct utmp_list *head, struct utmp *up)
*/
tlp = lp;
lp = lp->next;
if (tlp == head)
if (tlp == head) {
head = lp;
if (tlp == head)
head = NULL;
}
else if (lp2 != NULL)
lp2->next = lp;
free(tlp);