GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from bin/circle...done.
[New LWP 27322]
Core was generated by `circle -C3 9000'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  stop_follower (ch=ch@entry=0x558340e26d40) at utils.c:549
549         for (k = ch->master->followers; k->next->follower != ch; k = k->next);
(gdb) bt
#0  stop_follower (ch=ch@entry=0x558340e26d40) at utils.c:549
#1  0x000055833e6f1018 in destroy_db () at db.c:512
#2  0x000055833e6943de in main (argc=<optimized out>, argv=<optimized out>) at comm.c:356
(gdb) list
544       if (ch->master->followers->follower == ch) {  /* Head of follower-list? */
545         k = ch->master->followers;
546         ch->master->followers = k->next;
547         free(k);
548       } else {                      /* locate follower who is not head of list */
549         for (k = ch->master->followers; k->next->follower != ch; k = k->next);
550
551         j = k->next;
552         k->next = j->next;
553         free(j);
(gdb) info local
j = <optimized out>
k = 0x558340cffb80
(gdb) up
#1  0x000055833e6f1018 in destroy_db () at db.c:512
512           stop_follower(chtmp);
(gdb) list
507       /* Active Mobiles & Players */
508       while (character_list) {
509         chtmp = character_list;
510         character_list = character_list->next;
511         if (chtmp->master)
512           stop_follower(chtmp);
513         free_char(chtmp);
514       }
515
516       /* Active Objects */
(gdb) info local
cnt = <optimized out>
itr = <optimized out>
chtmp = 0x558340e26d40
objtmp = <optimized out>
(gdb) up
#2  0x000055833e6943de in main (argc=<optimized out>, argv=<optimized out>) at comm.c:356
356       destroy_db();
(gdb) list
351         log("Running game on port %d.", port);
352         init_game(port);
353       }
354
355       log("Clearing game world.");
356       destroy_db();
357
358       if (!scheck) {
359         log("Clearing other memory.");
360         free_bufpool();         /* comm.c */
(gdb) info local
pos = <optimized out>
dir = <optimized out>
(gdb) up
Initial frame selected; you cannot go up.
(gdb)