the problem is:

the kill signal is not issued by the parent, but by debugger.
so precess is not going to get killed rather it is going to be stopped.

what I want is :
after I do
kill(PIDGET(inferior_ptid),SIGINT);

I want to nulify the efect of SIGINT.
in the sense, I should be able to tell kernel, please cancel this kill request.
I do not want to send anymore....

is it possible ?