(gdb) run
Starting program: /usr/bin/lftp ftp://ftp.kernel.org/
(no debugging symbols found)
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cd ok, cwd=/
lftp ftp.kernel.org:/> cd
for_mirrors_only/  pub/  usr@  welcome.msg@
lftp ftp.kernel.org:/> cd pub/
RCS/  dist/  linux/  lost+found/  scm/  site/  software/
lftp ftp.kernel.org:/> cd pub/linux/                                            daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/
daemons/  devel/  docs/  kernel/  libs/  utils/
lftp ftp.kernel.org:/> cd pub/linux/kernel/
Program received signal SIGSEGV, Segmentation fault.
0x472053c3 in rl_redisplay () from /lib/libreadline.so.5
(gdb) bt
#0  0x472053c3 in rl_redisplay () from /lib/libreadline.so.5
#1  0x47207170 in rl_message () from /lib/libreadline.so.5
#2  0x0806d5b7 in ignore_non_dirs ()
#3  0x47200001 in _rl_find_completion_word () from /lib/libreadline.so.5
#4  0x47200ee4 in rl_complete_internal () from /lib/libreadline.so.5
#5  0x471ff662 in rl_complete () from /lib/libreadline.so.5
#6  0x471fba35 in _rl_dispatch_subseq () from /lib/libreadline.so.5
#7  0x471fb901 in _rl_dispatch () from /lib/libreadline.so.5
#8  0x471fb762 in readline_internal_char () from /lib/libreadline.so.5
#9  0x471fb848 in readline_internal_char () from /lib/libreadline.so.5
#10 0x471fb874 in readline_internal_char () from /lib/libreadline.so.5
#11 0x471fb4a1 in readline () from /lib/libreadline.so.5
#12 0x0806df87 in lftp_readline ()
#13 0x0806be09 in ReadlineFeeder::NextCmd ()
#14 0x080714af in CmdExec::Do ()
#15 0x08081497 in SMTask::Schedule ()
#16 0x0806b4ee in WaitDone ()
#17 0x0806ba61 in main ()