Function fun

test/core/test_struct_varargs.c:22–33

} color;

void fun(int a, ...) {
  (void)a;
  va_list ap;
  va_start(ap, a);

  coords var1 = va_arg(ap, coords);
  color var2 = va_arg(ap, color);
  printf("va_arg coords: %d and %d\n", var1.x, var1.y);
  printf("va_arg color: %d, %d, %d\n", var2.r, var2.g, var2.b);

  va_end(ap);
}

int main(void) {
  coords val1 = { .x = 42, .y = 21 };