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Date: Mon, 14 May 2007 06:47:27 -0600
From: Eric Blake <ebb9 AT byu DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: missing functions
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According to Christopher Faylor on 5/14/2007 6:25 AM:
> Why do we need to export *vdprintf_r at all?  Does some standard define it?

Does cygwin care about providing reentrant versions of functions?  There
is precedent for doing this: as an example, cygwin.din already exports
asprintf_r.  The *_r versions let the user provide a struct _reent*
argument and manage the reentrancy themselves rather than relying on the
automatic _REENT (aka _impure_ptr) reentrancy provided by cygwin.
Furthermore, /usr/include/stdio.h already declares these functions as an
underscore variant, so right now, you can link when using _asprintf_r.

But I agree that no standard requires these reentrant variants, and that a
user relying on _asprintf_r from /usr/include/stdio.h is already
non-portable, so omitting these variants from cygwin.din does not bother me.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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