From 4f72a1da7727cb5ea0a4ddef8853f913304ad169 Mon Sep 17 00:00:00 2001 From: Mark Spencer Date: Thu, 17 Jun 2004 04:42:03 +0000 Subject: [PATCH] Fix doubly-linked list delete git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3234 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- apps/app_meetme.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/apps/app_meetme.c b/apps/app_meetme.c index 57cb46f019..9b513661ad 100755 --- a/apps/app_meetme.c +++ b/apps/app_meetme.c @@ -938,14 +938,30 @@ outrun: } else { /* Remove the user struct */ if (user == conf->firstuser) { - user->nextuser->prevuser = NULL; + if (user->nextuser) { + /* There is another entry */ + user->nextuser->prevuser = NULL; + } else { + /* We are the only entry */ + conf->lastuser = NULL; + } + /* In either case */ conf->firstuser = user->nextuser; } else if (user == conf->lastuser){ - user->prevuser->nextuser = NULL; + if (user->prevuser) + user->prevuser->nextuser = NULL; + else + ast_log(LOG_ERROR, "Bad bad bad! We're the last, not the first, but nobody before us??\n"); conf->lastuser = user->prevuser; } else { - user->nextuser->prevuser = user->prevuser; - user->prevuser->nextuser = user->nextuser; + if (user->nextuser) + user->nextuser->prevuser = user->prevuser; + else + ast_log(LOG_ERROR, "Bad! Bad! Bad! user->nextuser is NULL but we're not the end!\n"); + if (user->prevuser) + user->prevuser->nextuser = user->nextuser; + else + ast_log(LOG_ERROR, "Bad! Bad! Bad! user->prevuser is NULL but we're not the beginning!\n"); } /* Return the number of seconds the user was in the conf */ sprintf(meetmesecs, "%i", (int) (user->jointime - time(NULL))); -- 2.47.2