Re: [Tinycc-devel] How to use functions which return struct?

[grischka]

Tovarisch wrote:
> All greetings, 
>
>  There is a necessity to use function div, returned value of function - 
> structure.
>  After it has appeared that in structure the garbage comes back, i lookd In 
> stdlib.c and has found the following:

What stdlib.c?

Anyway you are right that on windows there is a special convention
to return a structure in registers (eax/edx) when it fits, and this
is not implemented currently in tinycc, which always return structures
on stack space via an extra function parameter.

Options:
1) don't use such functions
2) define them yourself and compile by tinycc, like
    div_t div(int n, int d)
    {
        div_t r;
        r.quot = n / d, r.rem = n % d;
        return r;
    }
3) teach tinycc to do the right thing.

--- grischka

> /*
>  * div_t and ldiv_t are structures used to return the results of div and
>  * ldiv.
>  *
>  * NOTE: div and ldiv appear not to work correctly unless
>  *-fno-pcc-struct-return is specified. This is included in the
>  * mingw32 specs file.
>  */
>  
>  But according to the description "-fno" the negation key, and "-pcc-struct-return" there isn't present.
>  And as a result this key hasn't helped me.
>  If someone faced with similar, help please.