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Re: _Exit detection

From: Eric Blake
Subject: Re: _Exit detection
Date: Mon, 12 Jul 2010 23:38:48 -0600
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On 07/12/2010 05:17 PM, Paul Eggert wrote:
> On 07/12/10 14:44, Karl Berry wrote:
>> Sorry for my ignorance, but what's the advantage for RCS of using _exit
>> or _Exit instead of just plain exit() and thus eliminating the
>> complications?
> Signals.  Plain exit() isn't guaranteed to work in a signal handler.

Also, atexit() handlers.  Calling exit() recursively has unspecified
results, so an atexit() handler that must exit with non-zero status
(such as gnulib's close-out module that forces non-zero status if there
was any write error to stdout) must use _[eE]xit().

Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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