proper usage of "-exec-interrupt"

[Alexander Petukhov]

On 9/17/11 11:06 PM, Joel Brobecker wrote:
>> Whay does this signal come to parent process and can I avoid this
>> somehow?
> This is a bit of a guess, since I don't remember all the details,
> but I think it might be a question of process group. To implement
> the interrupt, many targets simply send a SIGINT signal to the
> inferior process group. If you spawned GDB within the same process
> group as GDB, and both GDB and the program being debugged share
> the same process group as well, the interrupt will cause SIGINT
> to be received by your IDE as well. So, try spawning GDB in its
> own process group.
>
I tried to move gdb into a distinct group with "setpgid(gdb_pid, 0)", 
right after spawning it with "g_spawn_async_with_pipes".
If I do so SIGINT doesn't come to IDE but a program being debugged quits 
right after executing "-exec-interrupt".
The gdb output is:

^done
(gdb)
&"Quit\n"
=thread-exited, .....
=thread-group-exited,....
*stopped,reason="exited-normally"

I also tried to do all this executing gdb from a terminal window and a 
program had stopped correctly with stop reason="signal-received", no 
quits...

Can't it be a bug, I've found several discussions with suggestions to 
send SIGINT or SIGTSTP directly to a process being debugged instead of 
using "-exec-interrupt" ?