Hello Elena,
Thank you. It no longer hangs.
My symptoms are now a bus error either running a program in the debugger,
or attaching the debugger.
Using an older debugger (which goes but can't read the symbols in my
GCC-3.0.3 program :-( ),
the top few lines of the back-trace are.
Program received signal SIGBUS, Bus error.
0x92de8 in add_thread (ptid={pid = -1774190241, lwp = 402653185,
tid = 1426915583}) at thread.c:125
125 {
(top-gdb) bt
#0 0x92de8 in add_thread (ptid={pid = -1774190241, lwp = 402653185,
tid = 1426915583}) at thread.c:125
#1 0xa1690 in child_acknowledge_created_inferior (pid=29475)
at infttrace.c:3126
#2 0x9f150 in ptrace_him (pid=29475) at inftarg.c:444
#3 0xed154 in fork_inferior (exec_file_arg=0x7323 "address@hidden",
allargs=0x400390e0 "", env=0x40039100,
traceme_fun=0x40016172 <_exit_dummy_decl+5330>,
init_trace_fun=0x4001617a <_exit_dummy_decl+5338>,
pre_trace_fun=0x40016182 <_exit_dummy_decl+5346>, shell_file_arg=0x0)
at fork-child.c:363
ptid is clearly insane, and looking down the stack, there seems to be a
type conflict
where the caller's data is sane but a completely different shape.
(top-gdb) up
#1 0xa1690 in child_acknowledge_created_inferior (pid=29475)
at infttrace.c:3126
3126 add_thread (pid); /* in thread.c */
(top-gdb) print pid
$2 = 29475
(top-gdb) shell ps -ef | fgrep gdb
smf_oper 29416 3418 0 19:17:33 pts/ta 0:00 gdb2 bin/smsMaster.jcone
root 29456 29177 1 19:18:22 pts/tb 0:01 /opt/gdb/bin/gdb ./gdb 29416
smf_oper 29475 29416 0 19:18:42 pts/ta 0:00 gdb2 bin/smsMaster.jcone
root 29497 29456 2 19:19:22 pts/tb 0:00 ksh -c ps -ef | fgrep gdb
(top-gdb)
If you know this problem too, I'd love a solution, but it's now 7pm local
time, so I'm running away, so it's not urgent.
Thanks for your help,
James.
At 00:42 8/02/2002 -0500, Elena Zannoni wrote:
J. Cone writes:
<snip>
> The gdb hangs forever having produced:
>
> (gdb) run
> Starting program: /volA/IN/service_packages/SMS/bin/smsMaster.jcone
Yes, known problem, vfork seems to not work properly on such platform.
Try this patch (of course, adapt it to hpux1100.mh or whatever
makefile fragment you end up using).
Elena
<snip>