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From: Jasen Betts <jasen@xnet.co.nz>
Newsgroups: comp.os.linux.development.apps
Subject: Re: child process does not core dump ?
Date: 28 Jul 2011 10:28:34 GMT
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On 2011-07-28, Srinivas Nayak <sinu.nayak2001@gmail.com> wrote:
> Hi,
>
> In my program, I fork() to get a child process.
> Because of some problem, child process terminates by a segmentation
> fault.
> Parent process is still running.
>
> I have compiled my code with -g option.
> I have done: ulimit -c unlimited.
>
> I am not getting core dump of the child process.
>
> How can I get the core dump of child process?

Um. I think the current directory should be writable by the process
user-id, there's probably several other ways to block a core dump too.

you might have to emit some diagnostics (eg: to stderr) to help you find 
where the failure is. (

Another option is after forking, have the parent spawn a gdb instance attached to
the child process (possibly spawn the gdb in an xterm if your stdio is
busy already)  then use that to trap the segfault.

-- 
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