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 "\226@\001_\030",
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>
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