muahhahahaha.c

#include <stdio.h>

#define CALL(name, ...) \
{ \
    int the_args[] = { __VA_ARGS__ }; \
    name(sizeof(the_args) / sizeof(int), the_args); \
}

void the_fun(unsigned nargs, int *args)
{
    printf("num of args: %d\n", nargs);
    for (int i = 0; i < nargs; i++) {
        printf("arg %d: %d\n", i, args[i]);
    }
}

main()
{
    CALL(the_fun, 1, 2, 3, 4);
    CALL(the_fun, 23, 77);
}