Piping on 64-bit Cygwin was Re: [ANNOUNCEMENT] llvm 3.7.1-2

[Corinna Vinschen]

On Jun 22 09:29, Warren Young wrote:
> On Jun 22, 2016, at 6:39 AM, Marco Atzeri <marco.atzeri@gmail.com> wrote:
> > 
> > 
> > may be is a piping problem, but there is no evidence; it could be a lot of different issues due to 64bit porting.
> > I will not be surprise if there is wrong assumption on data size.
> 
> That’s my guess, too.
> 
> 64-bit Windows is LLP64, while 64-bit Linux is LP64 on the same hardware.

s/Linux/Linux and Cygwin/

> That means that any binary protocol that uses C’s “long” data type
> will do the wrong thing on Cygwin, because it uses Windows’ data size
> rules for ABI compatibility with Windows.
> 
> See https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_models

And https://cygwin.com/faq.html#faq.programming.64bitporting


Corinna

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