Re: C89 "bug"

Em 12/13/2024 12:01 PM, Kaz Kylheku escreveu:

On 2024-12-13, Thiago Adams <thiago.adams@gmail.com> wrote:

unfortunately, this solution does not work if we have two objects.
>
union U {
         double d;
         int i;
   };
>
union U u1 = { .d=2.2 };
union U u2 = { .i=1   };

 Idea: have several declarations of the union in different translation
units.
 /* translation unit for u1 */
union U {
   double d;
   int i;
};
extern union U u1 = { 2.2 };
 /* translation unit for u2 */
union U {
   int i;
   double d;
};
extern union U u2 = { 1 };
 

another solution could be call a function that initializes before main.
extern union U u1;
void before_main()
{
   u1.d = 1.2;
}