(gdb) backtrace
#0 0xd12727f8 in int_vasprintf () from /opt/freeware/lib/libassuan.a
(libassuan.so.0)
#1 0xd12727a0 in _assuan_vasprintf () from /opt/freeware/lib/libassuan.a
(libassuan.so.0)
#2 0xd1272630 in _assuan_debug () from /opt/freeware/lib/libassuan.a
(libassuan.so.0)
#3 0xd1271398 in assuan_new_ext () from /opt/freeware/lib/libassuan.a
(libassuan.so.0)
#4 0x10004300 in ?? ()
#5 0x10000d08 in ?? ()
#6 0x100001b4 in ?? ()

$> gdb which gpg-connect-agent
GNU gdb (GDB) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "powerpc64-ibm-aix6.1.2.0".
For bug reporting instructions, please see:
http://www.gnu.org/software/gdb/bugs/...
Reading symbols from /usr/bin/gpg-connect-agent...(no debugging symbols
found)...done.
(gdb)
Starting program: /usr/bin/gpg-connect-agent 'getinfo version' /bye
[New Thread 1]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1]
0xd12727f8 in int_vasprintf () from /opt/freeware/lib/libassuan.a
(libassuan.so.0)