Re: [Mingw-users] Initializing _fmode

[Earnie B. <ear...@ya...>]

Danny Smith wrote:
> 
> ----- Original Message -----
> From: "Veldkamp, Michiel" <mic...@at...>
> To: "'min...@li...'" <min...@li...>
> Sent: Wednesday, 2 October 2002 17:33
> Subject: Re: [Mingw-users] Initializing _fmode
> 
> > "Earnie Boyd" wrote:
> >
> > > What happens with `unsigned int _fmode = _O_BINARY;'?
> >
> > It builds, but has no effect. It seems as if a new
> > variable is created.
> >
> 
> Two points:
> 1)  according to MSDN docs
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/h
> tml/_crt__fmode.asp
> 

I didn't find this one.

> _fmode is declared as  int , not unsigned
> it is declared in stdlib.h, not fcntl.h
> 

I did find this.

> 2) The _CRT_fmode mechanism  in place in current mingw does a bit more
> than what Michiel's example would do: It also changes mode of  stdin,
> stderr, and stdout.
> 
> It is possible to have the _fmode/binmode.o mechanism working as per
> MSDN docs (set mode of everyhing except  std file handles) as well as
> the mingw specific  _CRT_fmode mechanism.  Is that desirable?
> 

Yes, binmode.o for _fmode and CRTbinmode.o to affect _CRT_fmode.

I'm also thinking we need to clean up fcntl.h to remove the #define and
appropriate define _fmode in stdlib.h.  Dependency Walker
(www.dependencywalker.com) shows some other interesting fmode items such
as __p__fmode.

Earnie.