Re: [Mingw-users] binary file stream cause data lose on win32?

[Zhang Le <ej...@pe...>]

On Sunday 13 October 2002 21:56, you wrote:
> That is good practice, but should not be necessary.  If this actually
> doesn't work without explicit f.close(), that would be a bug.
I think so too.Under linux,all things are right,but when porting to win32=
,
some program is right while some are not.Hope it's my program's bug.
>
> > 2.always use ofstream(file,ios::binary) or fopen(file,"wb") to open
> > a binary for written,even it not necessary under Linux.
>
> Right.  Linux and Unix don't have the distinction text vs. binary.
> For other systems it's rather important.
Would it be possible to make mingw32 workaround this for easy porting of =
unix=20
software?
>
> The problem is just missing C++ education (no offense intended).  Any
> book or documentation that teaches binary streams in C++ and doesn't
> mention the issue should be thrown away.
> PS: Note that with binary streams you are not even using any ofstream
> features (that "f" is for "formatted" =3D=3D "text" after all), so you =
can
> just as well directly use the underlying
>
>
>   filebuf f;
>   f.open("file.bin",ios::binary|ios::out);
>   f.sputn((char*)dataptr,datasize);
>   f.close();

Maybe my unpleasent experience worthy of a hint for unix->win32 porting.S=
ince=20
many unix developers do not notice such difference.

Thanks a lot.
--=20
                                       Sincerely yours,
                                                  Zhang Le