#0  0x0807a9da in ast_channel_alloc (needqueue=0, state=1, cid_num=0x0, cid_name=0x0, acctcode=0x8c5e000 "Zap/pseudo-138550480",
    exten=0x154918d0 <Address 0x154918d0 out of bounds>, context=0x806650 "°è¹\b\030", amaflag=90, 
    name_fmt=0x1 <Address 0x1 out of bounds>) at strings.h:35
35              return (!s || (*s == '\0'));
(gdb) bt
#0  0x0807a9da in ast_channel_alloc (needqueue=0, state=1, cid_num=0x0, cid_name=0x0, acctcode=0x8c5e000 "Zap/pseudo-138550480", 
    exten=0x154918d0 <Address 0x154918d0 out of bounds>, context=0x806650 "°è¹\b\030", amaflag=90, 
    name_fmt=0x1 <Address 0x1 out of bounds>) at strings.h:35
#1  0xb76090a7 in zt_new (i=0x8c64a78, state=1, startpbx=0, index=0, law=0, transfercapability=0) at chan_zap.c:5173
#2  0xb761bfce in zt_request (type=0xb7441764 "zap", format=64, data=0xb744175d, cause=0xb6e11f90) at chan_zap.c:7815
#3  0x08081d53 in ast_request (type=0xb7441764 "zap", format=64, data=0xb744175d, cause=0xb6e11f90) at channel.c:3148
#4  0xb74323b9 in build_conf (confno=0xb6e12040 "1101", pin=0xb7441da8 "", pinadmin=0xb7441da8 "", make=1, dynamic=0, refcount=1)
    at app_meetme.c:756
#5  0xb7438258 in find_conf (chan=0xb798de00, confno=0xb6e12290 "1101", make=1, dynamic=0, dynamic_pin=0xb6e12210 "", 
    pin_buf_len=80, refcount=1, confflags=0xb6e12280) at strings.h:34
#6  0xb74390ad in conf_exec (chan=0xb798de00, data=0xb6e125ec) at app_meetme.c:2627
#7  0x080b60b3 in pbx_exec (c=0xb798de00, app=0xb79130b8, data=0xb6e125ec) at pbx.c:532
#8  0xb7c753bd in handle_exec (chan=0xb798de00, agi=0xb6e12e50, argc=3, argv=0xb6e12390) at res_agi.c:1116
#9  0xb7c76500 in agi_handle_command (chan=0xb798de00, agi=0xb6e12e50, buf=0xb6e125e0 "EXEC") at res_agi.c:1812
#10 0xb7c768da in run_agi (chan=0xb798de00, request=0xb6e12e80 "inbound_call.php", agi=0xb6e12e50, pid=5748, status=0xb6e12e4c, 
    dead=0) at res_agi.c:1894
#11 0xb7c77019 in agi_exec_full (chan=0xb798de00, data=0xb6e17aa0, enhanced=0, dead=0) at res_agi.c:2038
#12 0xb7c7719c in agi_exec (chan=0xb798de00, data=0xb6e17aa0) at res_agi.c:2069
#13 0x080b60b3 in pbx_exec (c=0xb798de00, app=0x8b9f7e8, data=0xb6e17aa0) at pbx.c:532
#14 0x080b92f9 in pbx_extension_helper (c=0xb798de00, con=0x0, context=0xb798df80 "inbound_new", exten=0xb798dfd0 "s", priority=5, 
    label=0x0, callerid=0xb798dc68 "NET24_5", action=E_SPAWN) at pbx.c:1833
#15 0x080ba3bb in ast_spawn_extension (c=0xb798de00, context=0xb798df80 "inbound_new", exten=0xb798dfd0 "s", priority=5, 
    callerid=0xb798dc68 "NET24_5") at pbx.c:2288
#16 0x080ba8a9 in __ast_pbx_run (c=0xb798de00) at pbx.c:2388
#17 0x080bb5a6 in pbx_thread (data=0xb798de00) at pbx.c:2601
#18 0x080f3b09 in dummy_start (data=0xb798db28) at utils.c:545
#19 0xb7ed9ce1 in pthread_start_thread () from /lib/i686/libpthread.so.0
#20 0xb7e4cd3a in clone () from /lib/i686/libc.so.6
(gdb) bt full
#0  0x0807a9da in ast_channel_alloc (needqueue=0, state=1, cid_num=0x0, cid_name=0x0, acctcode=0x8c5e000 "Zap/pseudo-138550480", 
    exten=0x154918d0 <Address 0x154918d0 out of bounds>, context=0x806650 "°è¹\b\030", amaflag=90, 
    name_fmt=0x1 <Address 0x1 out of bounds>) at strings.h:35
        tmp = (struct ast_channel *) 0x8c67940
        x = 6
        flags = 1
        headp = (struct varshead *) 0xb7dc974b
        ap1 = 0xb6e11ca8 "¸\035ᶧ\220`·"
        ap2 = 0x1 <Address 0x1 out of bounds>
        __PRETTY_FUNCTION__ = "ast_channel_alloc"
#1  0xb76090a7 in zt_new (i=0x8c64a78, state=1, startpbx=0, index=0, law=0, transfercapability=0) at chan_zap.c:5173
        tmp = Variable "tmp" is not available.