[PATCH] Use O_CLOEXEC for internal file descriptors

[Adam Jackson]

On Mon, 2012-02-27 at 10:41 -0800, Alan Coopersmith wrote:
> On 02/27/12 08:35 AM, Adam Jackson wrote:
> > +#if defined(linux) && !defined(__GNU_SOURCE)
> > +#define __GNU_SOURCE
> > +#endif
> 
> Wouldn't AC_USE_SYSTEM_EXTENSIONS in configure.ac cover this, as well as making
> it more likely to enable non-standard extensions such as this on other OSes?

Technically O_CLOEXEC is standardized in POSIX.1-2008, but yes, that
would be better.  Will resend.

- ajax
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