(gdb) bt full #0 _mfree (ptr=0x1, file=0x82337ff "unit.c", line=2337, func=0x8233a68 "unit_free") at malloc.c:388 head = 0xfffffff5 #1 0x081e46bb in unit_free (bl=0xb353410, clrtype=CLR_TELEPORT) at unit.c:2337 i = 0 __FUNCTION__ = "unit_free" #2 0x081e4b12 in unit_free_pc (sd=0xb353410) at unit.c:2283 No locals. #3 0x0807a971 in map_quit (sd=0xb353410) at map.c:1739 i = 136305984 __FUNCTION__ = "map_quit" #4 0x08098214 in clif_parse (fd=15) at clif.c:17636 cmd = 32768 packet_len = 1 sd = 0xb353410 pnum = 0 #5 0x081f92c8 in send_shortlist_do_sends () at socket.c:1528 fd = 15 i = 0 #6 0x081faa45 in do_sockets (next=50) at socket.c:792 rfd = {__fds_bits = {32768, 0 }} timeout = {tv_sec = 0, tv_usec = 41088} ret = 0 i = 15 #7 0x081f885b in main (argc=1, argv=0xbfd27a24) at core.c:350 next = 136526440 (