$ aCC --version
aCC: HP aC++/ANSI C B3910B A.06.10 [Mar 22 2006]

HP-UX 11i Version 2: August 2003
HP gdb 5.4.0 for HP Itanium (32 or 64 bit) and target HP-UX 11.2x.

#0  0x60000000c02a8f50:0 in kill+0x30 () from /usr/lib/hpux32/libc.so.1
(gdb) bt
#0  0x60000000c02a8f50:0 in kill+0x30 () from /usr/lib/hpux32/libc.so.1
#1  0x60000000c019fe90:0 in raise+0x30 () from /usr/lib/hpux32/libc.so.1
#2  0x60000000c0263390:0 in abort+0x190 () from /usr/lib/hpux32/libc.so.1
#3  0x60000000c0136c00:0 in _assert+0x280 () from /usr/lib/hpux32/libc.so.1
#4  0x60000000d443c1a0:0 in IceInternal::ThreadPool::run (this=0x42505f00)
    at ThreadPool.cpp:680
#5  0x60000000d4427330:0 in IceInternal::ThreadPool::EventHandlerThread::run (
    this=0x429d5250) at ThreadPool.cpp:875
#6  0x60000000d328f6f0:0 in startHook (arg=0x429d5250) at Thread.cpp:357
#7  0x60000000c0334420:0 in __pthread_bound_body+0x170 ()
   from /usr/lib/hpux32/libpthread.so.1