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From: Rainer Weikusat <rweikusat@mssgmbh.com>
Newsgroups: comp.os.linux.development.apps,comp.os.linux.development.system
Subject: Re: Status = 2943 from waitpid?
Date: Thu, 09 Jun 2011 13:51:15 +0100
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Jeffrey Walton <noloader@gmail.com> writes:
> I'm ptrace'ing a process. After fork/exec and then a wait on the
> child, I'm getting a status of 2943. I'm testing for failure, but
> waitpid reports non-failure. I've looked in <sys/wait.h>, but the
> value 2943 is not defined and does not appear to be a bit mask.
>
> Any ideas on where I should look?

At the corresponding hexnumber which is 0xb7f, meaning (AFAIK), your process
was stopped by a SIGSEGV. A fairly human-readable version of the code
generating and analysing these numbers should be in
/usr/include/bits/waitstatus.h. The relevant macro is

#define __W_STOPCODE(sig)       ((sig) << 8 | 0x7f)