Daniel Kobras writes:
> On Tue, Aug 24, 2004 at 06:21:57PM +0200, Kevin Glynn wrote:
> > fyi, it is because va_list is declared as a one-element array of
> > structs on powerpc, unlike other architectures so code like:
> >
> > va_list Arg4 = (va_list) OZ_getForeignPointer((*(_OZ_LOC[(4)])));
> >
> > fails on powerpc, because you can't cast to an array.
>
> And you may not assign to a va_list. Use va_copy() instead to be
> portable.
>
> Daniel.
>
I don't see how va_copy will help me. OZ_getForeignPointer(...)
returns a void*, so I will still need to cast it to a va_list to be
able to call va_copy. Here is my test program, perhaps you can suggest
an alternative:
typedef struct __kk_va_list_tag {
unsigned char gpr;
unsigned char fpr;
char *overflow_arg_area;
char *reg_save_area;
} __kk_va_list[1], __kk_gnuc_va_list[1];
typedef __kk_gnuc_va_list kk_va_list;
extern void kk_va_copy(kk_va_list dest, kk_va_list src);
/*
#include <stdarg.h>
*/
main () {
kk_va_list Arg4;
kk_va_copy(Arg4, ((void *)0));
}
@quaver:tmp 4Q> g++ -c kk.c
kk.c: In function `int main()':
kk.c:18: error: invalid conversion from `void*' to `__kk_va_list_tag*'
Thanks for all advice,
k
PS. Sorry for unwanted ccs, let me know and I will remove. I am not
subscribed to debian-powerpc, but can check the archives for
responses.
--
------------- you're invited to: -------------------------
The Second International Mozart/Oz Conference (MOZ 2004)
Charleroi, Belgium, Oct. 7-8, 2004
http://www.cetic.be/moz2004
----------------------------------------------------------
