From owner-freebsd-hackers@FreeBSD.ORG  Fri Apr 18 15:53:56 2003
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Date: Fri, 18 Apr 2003 18:53:54 -0400 (EDT)
From: Daniel Eischen <eischen@pcnet1.pcnet.com>
To: Alex Semenyaka <alexs@ratmir.ru>
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cc: freebsd-hackers@freebsd.org
cc: David Xu <davidxu@freebsd.org>
cc: freebsd-threads@freebsd.org
Subject: Re: libpthread patch
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On Sat, 19 Apr 2003, Alex Semenyaka wrote:

> On Wed, Apr 16, 2003 at 01:09:46PM -0400, Daniel Eischen wrote:
> > Found it!  The library's version of sigaction was not allowing
> > a signal handler for SIGCHLD to be installed; it was leftover
> > from libc_r.
> 
> By the way, in this connection could somebody check my follow-up to
> the PR bin/48856? I suggested a really small fix (3 lines in total)
> to the current implementation of the signal(). With the current one
> the call of signal(SIGCHLD, SIG_IGN) still allows zombie to be born.
> There are to places to fix actually, one is the standard libc and
> second is the pthreads (that's why I am sending this message to
> -threads as well). If that fix is bad somehow I would gladly receive
> any explanations. Thanks!

I don't think you can always set SA_NOCLDWAIT because it could
screw up wait() in programs that don't set SA_NOCLDWAIT.

-- 
Dan Eischen