Re: Building mozart-gtk on powerpc [request for help]

[Kevin Glynn <glynn@info.ucl.ac.be>]

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. 




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