代码

int plus(int a, int b) { return a + b; }
extern "C" void __init_libc(char **envp, char *pn);
extern void (*__init_array_start[])(void);
extern void (*__init_array_end[])(void);
void __libc_start_main(int (*m)(int, char **), int ac, char **av) {
    __init_libc(av + ac + 1, av[0]);
    for (void (**f)(void) = __init_array_start; f != __init_array_end; ++f) (*f)();
    m(ac, av);
    __asm__ volatile("mov $60,%eax; xor %edi,%edi; syscall");
    __builtin_unreachable();
}

评测结果