Works well

gistfile1.txt

ricky@t520 96% ~$ host ebay.com
name.c:2445: REQUIRE((((source) != ((void *)0)) && (((const isc__magic_t *)(source))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n')))))) failed, back trace
#0 0x3f984137a7 in ??
#1 0x3f984136fa in ??
#2 0x3f98880dbc in ??
#3 0x409a49 in ??
#4 0x409aea in ??
#5 0x409ca8 in ??
#6 0x40ef1a in ??
#7 0x3f98435ecb in ??
#8 0x3dc8a0752a in ??
#9 0x3dc7f0077d in ??
Aborted (core dumped)


ricky@t520 96% ~$ gdb host
GNU gdb (GDB) Fedora 7.8.1-32.fc21
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
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Reading symbols from host...Reading symbols from /home/ricky/host...(no debugging symbols found)...done.
(no debugging symbols found)...done.
Missing separate debuginfos, use: debuginfo-install bind-utils-9.9.6-4.fc21.x86_64
(gdb) set args ebay.com
(gdb) r
Starting program: /usr/bin/host ebay.com
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff7f70700 (LWP 16096)]
[New Thread 0x7ffff776f700 (LWP 16097)]
[New Thread 0x7ffff6f6e700 (LWP 16098)]
name.c:2445: REQUIRE((((source) != ((void *)0)) && (((const isc__magic_t *)(source))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n')))))) failed, back trace
#0 0x3f984137a7 in ??
#1 0x3f984136fa in ??
#2 0x3f98880dbc in ??
#3 0x409a49 in ??
#4 0x409aea in ??
#5 0x409ca8 in ??
#6 0x40ef1a in ??
#7 0x3f98435ecb in ??
#8 0x3dc8a0752a in ??
#9 0x3dc7f0077d in ??

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7ffff7f70700 (LWP 16096)]
0x0000003dc7e348c7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
55	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) bt
#0  0x0000003dc7e348c7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1  0x0000003dc7e3652a in __GI_abort () at abort.c:89
#2  0x0000003f984136ff in isc_assertion_failed () from /lib64/libisc.so.95
#3  0x0000003f98880dbc in dns_name_copy () from /lib64/libdns.so.104
#4  0x0000000000409a49 in clone_lookup ()
#5  0x0000000000409aea in requeue_lookup ()
#6  0x0000000000409ca8 in next_origin ()
#7  0x000000000040ef1a in connect_timeout ()
#8  0x0000003f98435ecb in run () from /lib64/libisc.so.95
#9  0x0000003dc8a0752a in start_thread (arg=0x7ffff7f70700) at pthread_create.c:310
#10 0x0000003dc7f0077d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109