[Mingw-users] Re: compiler byte swapping

[Oscar F. <of...@wa...>]

"Alan Smallbone" <asm...@fo...> writes:

> Hi Oscar,
>
> Thanks for responding, I have attached a zip file which I hacked
> bits of the program out of and made it into a short executable that
> illustrates the problem that I am seeing. It is not in the "mywrite"
> definition as I first thought, it appears to be in how the data is
> passed to it from the "WRITELONG" as defined in this program. In the
> zip file is the header file and the test case program, and please,
> it is not the best thing in the world as an example. Also included
> are results from the two versions of the c compiler the
> fwrite.out_test1_V1 is from version 2.95.3-6 of gcc and is in the
> correct order, the fwrite.out_test1_V2 file is from gcc version 3.2
> from the latest version of mingw. Thanks so much for the help.

[Please keep discussion on list, thanks.]

I think this is the problem:

WRITELONG( '8BPS' );

In C++, how the compiler handles multibyte character constants is
implementation-defined. I guess the same applies to C. Maybe gcc 2.9x
keeps the byte order and 3.x swaps it. Have you tried with integer
constants instead of multibyte character constants?

-- 
Oscar