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To:	Earnie Boyd <cygwin AT cygwin DOT com>
cc:	Eric PAIRE <eric DOT paire AT ri DOT silicomp DOT com>
Subject:	Re: misdefined macro _T in winnt.h
In-reply-to:	Your message of Wed, 31 Jan 2001 10:26:47 -0500.
	<3A782EB7 DOT BD09F881 AT yahoo DOT com>
Mime-Version:	1.0
Date:	Thu, 01 Feb 2001 13:44:45 +0100
From:	Eric Paire <paire AT ri DOT silicomp DOT fr>

Earnie Boyd wrote:
> 
> Eric PAIRE wrote:
> > 
> > Hi cygwin people,
> > 
> > I have found a problem with the _T macro definition as it is defined in
> > w32api/include/winnt.h: "#define _T TEXT" does not compile correctly the
> > following small program:
> > 
> > ------  Cut Here  ------  Cut Here  ------  Cut Here  ------  Cut Here  ------
> >  #include <windows.h>
> >  #define __DIR "dir"
> > 
> >  main() {
> >         size_t len = wcslen(_T(__DIR)) + wcslen(_T("dir"));
> >         exit(len);
> >  }
> > ------  Cut Here  ------  Cut Here  ------  Cut Here  ------  Cut Here  ------
> > 
> 
> What problems do you see compiling this with the current headers?  I'm
> not having problems compiling this example.
> 
Sorry folks, I have forgotten to tell you to compile it with the _UNICODE
and UNICODE defined. Here is a corrected  version that has some problems
when compiled:

------  Cut Here  ------  Cut Here  ------  Cut Here  ------  Cut Here  ------
 #define __DIR "dir"

 #include <stddef.h>
 #include <tchar.h>
 main() {
 	size_t len = wcslen(_T(__DIR)) + wcslen(_T("dir"));
 	size_t len = wcslen(_TEXT(__DIR)) + wcslen(_TEXT("dir"));
	exit(len);
 }
------  Cut Here  ------  Cut Here  ------  Cut Here  ------  Cut Here  ------

You will see that the problem is around the evaluation of the __DIR macro
(there is no problem with "dir"), both for _TEXT and _T. In addition, this
should be fixed also for the _T and _TEXT definitions in <winnt.h>, which
should be coherent with those in <tchar.h> (They are not for now, as _T is
defined either as an object-like macro (in <winnt.h>) or as a function-like
macro (in <tchar.h>)).

If you want me to provide you with a patch (and a ChangeLog), let me know...

Best regards,
-Eric
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Eric PAIRE
Web  : http://www.ri.silicomp.com/~paire  | Groupe SILICOMP - Research Institute
Email: eric DOT paire AT ri DOT silicomp DOT com         | 2, avenue de Vignate
Phone: +33 (0) 476 63 48 71               | F-38610 Gieres
Fax  : +33 (0) 476 51 05 32               | FRANCE



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