gdb) f 5
#5  0x0000002a9a7da49a in play_message (chan=0x2a9f6213b0, vmu=0x4082a340, vms=0x4082a7b0) at app_voicemail.c:4640
4640		RETRIEVE(vms->curdir, vms->curmsg);
(gdb) p vmu->mailbox
$4 = "30123", '\0' <repeats 74 times>