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From: Alexander Monakov <amonakov@ispras.ru>
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Subject: Re: [PATCH] faccessat: fix error code on setreXid failure
Date: Wed, 31 Jan 2018 01:20:45 +0300 (MSK)
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On Tue, 30 Jan 2018, Rich Felker wrote:
> > We know we are not tracing this child, and stop notifications are only
> > delivered if WUNTRACED is given in flags, aren't they?
> 
> I'm not sure what can happen if it's all running under strace -f or
> something. And I'm not sure what the conditions for stop notifications
> are. If it's assured that they can't happen then maybe the loop can be
> removed.

Well, currently musl is just inconsistent, as in other instance(s?)
(most notably in posix_spawn) it makes a single call to waitpid
without retrying even though the same concerns apply.

Alexander