From 55eb6c9e5b49604bb9c2a98ccc9e4c9832b07a83 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Tue, 4 Mar 1997 03:31:21 +0000 Subject: [PATCH] don't free nulls --- modules/if_ppp.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/modules/if_ppp.c b/modules/if_ppp.c index 7b06f54..d7541ba 100644 --- a/modules/if_ppp.c +++ b/modules/if_ppp.c @@ -24,7 +24,7 @@ * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, * OR MODIFICATIONS. * - * $Id: if_ppp.c,v 1.3 1996/09/14 05:11:13 paulus Exp $ + * $Id: if_ppp.c,v 1.4 1997/03/04 03:31:21 paulus Exp $ */ /* @@ -140,8 +140,10 @@ if_ppp_unload() for (i = 0; i < ppp_nalloc; ++i) if (ifs[i] != 0) ppp_if_detach(ifs[i]); - FREE(ifs, ppp_nalloc * sizeof (struct ifnet *)); - FREE(states, ppp_nalloc * sizeof (struct if_ppp_t *)); + if (ifs) { + FREE(ifs, ppp_nalloc * sizeof (struct ifnet *)); + FREE(states, ppp_nalloc * sizeof (struct if_ppp_t *)); + } ppp_nalloc = 0; return 0; } @@ -270,8 +272,10 @@ if_ppp_wput(q, mp) bzero(newstates, newn * sizeof (struct if_ppp_t *)); bcopy(ifs, newifs, ppp_nalloc * sizeof(struct ifnet *)); bcopy(states, newstates, ppp_nalloc * sizeof(if_ppp_t *)); - FREE(ifs, ppp_nalloc * sizeof(struct ifnet *)); - FREE(states, ppp_nalloc * sizeof(if_ppp_t *)); + if (ifs) { + FREE(ifs, ppp_nalloc * sizeof(struct ifnet *)); + FREE(states, ppp_nalloc * sizeof(if_ppp_t *)); + } ifs = newifs; states = newstates; ppp_nalloc = newn; -- 2.39.2