Saving errno around signal handlers

[Florian Weimer]

On 02/28/2014 10:19 PM, Roland McGrath wrote:
>> POSIX has green-lighted saving errno around signal handlers.
>
> I don't even know what you might think that means.  Whenever talking about
> a change in a standard, provide a reference to the actual change in the
> actual standard.

It's about this change:

   <http://austingroupbugs.net/view.php?id=807>

At present, many signal handlers are incorrect, even though they only 
call async-signal-safe functions because they fail to save and restore 
errno.

-- 
Florian Weimer / Red Hat Product Security Team