[warp@warp-fedora64-devel bin]$ gdb ./cbc
GNU gdb (GDB) Fedora (7.3.50.20110722-13.fc16)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/libcouchbase/bin/cbc...done.
(gdb) set args observe -h192.168.0.101 -bvp_transactions -uwarp -Ptesttest 0001
(gdb) show args
Argument list to give program being debugged when it is started is "observe -h192.168.0.101 -bvp_transactions -uwarp -Ptesttest 0001".
(gdb) run
Starting program: /opt/libcouchbase/bin/cbc observe -h192.168.0.101 -bvp_transactions -uwarp -Ptesttest 0001
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7bdf78f in vbucket_get_master (vb=0x619190, vbucket=21870) at src/vbucket.c:704
704         return vb->vbuckets[vbucket].servers[0];
Missing separate debuginfos, use: debuginfo-install glibc-2.14.90-24.fc16.6.x86_64
(gdb) backtrace
#0  0x00007ffff7bdf78f in vbucket_get_master (vb=0x619190, vbucket=21870) at src/vbucket.c:704
#1  0x00007ffff7dea4e9 in observe_response_handler (server=0x62cd00, command_data=0x7fffffffda20, res=0x61e380) at src/handler.c:330
#2  0x00007ffff7de82f6 in parse_single (stop=1342723868396877000, c=0x62cd00) at src/event.c:143
#3  do_read_data (c=0x62cd00) at src/event.c:226
#4  libcouchbase_server_event_handler (sock=<optimized out>, which=2, arg=0x62cd00) at src/event.c:291
#5  0x00007ffff7783bcc in event_process_active_single_queue (activeq=<optimized out>, base=<optimized out>) at event.c:1287
#6  event_process_active (base=<optimized out>) at event.c:1354
#7  event_base_loop (base=0x617170, flags=0) at event.c:1551
#8  0x000000000040844b in handleCommandLineOptions (cmd=<optimized out>, argc=<optimized out>, argv=<optimized out>) at tools/cbc.cc:1378
#9  0x0000000000404241 in main (argc=6, argv=0x7fffffffdf70) at tools/cbc.cc:1526
(gdb) frame 0
#0  0x00007ffff7bdf78f in vbucket_get_master (vb=0x619190, vbucket=21870) at src/vbucket.c:704
704         return vb->vbuckets[vbucket].servers[0];
(gdb) info frame
Stack level 0, frame at 0x7fffffffd8d0:
 rip = 0x7ffff7bdf78f in vbucket_get_master (src/vbucket.c:704); saved rip 0x7ffff7dea4e9
 called by frame at 0x7fffffffd980
 source language c.
 Arglist at 0x7fffffffd8c0, args: vb=0x619190, vbucket=21870
 Locals at 0x7fffffffd8c0, Previous frame's sp is 0x7fffffffd8d0
 Saved registers:
  rip at 0x7fffffffd8c8
(gdb) info locals
No locals.
(gdb) up
#1  0x00007ffff7dea4e9 in observe_response_handler (server=0x62cd00, command_data=0x7fffffffda20, res=0x61e380) at src/handler.c:330
330                                     server->index == vbucket_get_master(config, vb),
(gdb) info frame
Stack level 1, frame at 0x7fffffffd980:
 rip = 0x7ffff7dea4e9 in observe_response_handler (src/handler.c:330); saved rip 0x7ffff7de82f6
 called by frame at 0x7fffffffda80, caller of frame at 0x7fffffffd8d0
 source language c.
 Arglist at 0x7fffffffd8c8, args: server=0x62cd00, command_data=0x7fffffffda20, res=0x61e380
 Locals at 0x7fffffffd8c8, Previous frame's sp is 0x7fffffffd980
 Saved registers:
  rbx at 0x7fffffffd948, rbp at 0x7fffffffd950, r12 at 0x7fffffffd958, r13 at 0x7fffffffd960, r14 at 0x7fffffffd968, r15 at 0x7fffffffd970, rip at 0x7fffffffd978
(gdb) info locals
cas = <optimized out>
vb = 21870
key = 0x61e39c "own config param"
obs = 0 '\000'
nkey = 27502
root = 0x6176e0
status = 1
ttp = <optimized out>
ttr = <optimized out>
config = 0x619190
end = 0x61e3ac ""
ptr = 0x624f13 ""
(gdb) q