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Date: Thu, 25 Apr 2013 11:57:37 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Porting to 64 bit Cygwin (was Re: Difference in 32/64-bit curl.)
Message-ID: <20130425095737.GA2875@calimero.vinschen.de>
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References: <51766C22 DOT 10702 AT bahnhof DOT se> <51770372 DOT 4070408 AT t-online DOT de> <20130424125930 DOT GQ26397 AT calimero DOT vinschen DOT de> <20130424134749 DOT GR26397 AT calimero DOT vinschen DOT de> <517803D9 DOT 3060504 AT t-online DOT de> <20130424174401 DOT GY26397 AT calimero DOT vinschen DOT de> <51783547 DOT 9010002 AT t-online DOT de>
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User-Agent: Mutt/1.5.21 (2010-09-15)

On Apr 24 21:40, Christian Franke wrote:
> Corinna Vinschen wrote:
> >>- DON'T forget to add casts if such Win32 API types are used with
> >>printf(). This:
> >>
> >>   printf("Win32 Error=%lu\n", GetLastError());
> >>
> >>worked for all i686 and Windows x86_64, but fails now on Cygwin x86_64.
> >I skipped that because the FAQ entry is not exactly what I wrote in my
> >mail.  Do you still think this is necessary?
> 
> No - these cases would be reported by compiler if -W[error=]format
> is enabled.
> 
> Yes - the knowledge that there is no portable way to pass DWORD,
> LONG, ... to printf() without a cast might help to write correct
> code without test builds on all platforms :-)

I extended the FAQ entry and added two more:

http://cygwin.com/faq-nochunks.html#faq.programming.64bitporting
http://cygwin.com/faq-nochunks.html#faq.programming.64bitporting-fail
http://cygwin.com/faq-nochunks.html#faq.programming.64bitporting-cygwin64


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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