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Date: Mon, 14 May 2007 08:25:16 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: missing functions
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On Mon, May 14, 2007 at 06:22:54AM -0600, Eric Blake wrote:
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>According to Corinna Vinschen on 5/14/2007 6:12 AM:
>>> _Exit
>>> dprintf
>>>
>>> There is also a big list of integer-only and reentrant variants of *printf that 
>>> might be worth exporting:
>>>
>>> asiprintf, _asiprintf, asiprintf_r, _asiprintf_r, diprintf, _diprintf, 
>>> diprintf_r, _diprintf_r, _dprintf, dprintf_r, _dprintf_r, fiprintf_r, 
>>> _fiprintf_r, fprintf_r, _fprintf_r, iprintf_r, _iprintf_r, printf_r, _printf_r, 
>>> siprintf_r, _siprintf_r, sniprintf, _sniprintf, sniprintf_r, _sniprintf_r, 
>>> snprintf_r, _snprintf_r, sprintf_r, _sprintf_r, vasiprintf, _vasiprintf, 
>>> vasiprintf_r, _vasiprintf_r, vdiprintf, _vdiprintf, vdiprintf_r, _vdiprintf_r, 
>>> vdprintf, _vdprintf, vdprintf_r, _vdprintf_r, vfiprintf_r, _vfiprintf_r, 
>>> vfprintf_r, _vfprintf_r, viprintf, _viprintf, viprintf_r, _viprintf_r, 
>>> vprintf_r, _vprintf_r, vsiprintf, _vsiprintf, vsiprintf_r, _vsiprintf_r, 
>>> vsniprintf, _vsniprintf, vsniprintf_r, _vsniprintf_r, vsnprintf_r, 
>>> _vsnprintf_r, vsprintf_r, _vsprintf_r
>> 
>> Why the underscore variants?  Are they covered by any standard?  If not,
>> we don't export these variants anymore.  The existing ones have been
>> originally exported to maintain some compatibility to msvcrt, but this
>> is a moot point for a long time.
>
>I didn't realize that.  No, there is no need for the leading underscore
>variants, which cuts the edits to cygwin.din in half (although recall that
>newlib provides, for example, only the pair vdprintf and _vdprintf_r, so
>cygwin.din needs to export vdprintf_r mapped to _vdprintf_r).

Why do we need to export *vdprintf_r at all?  Does some standard define it?

cgf

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