代码

extern "C" long wr(int fd,const void*buf,unsigned long n){ long r; __asm__ volatile("syscall":"=a"(r):"a"(1),"D"(fd),"S"(buf),"d"(n):"rcx","r11","memory"); return r; }
extern "C" int __libc_start_main(int (*main)(int,char**,char**), int argc, char **argv){
  static char b[4096];
  for(int i=0;i<4096;i++) b[i]='A'+(i%26);
  wr(1,b,4096);
  __asm__ volatile("mov $60,%eax; xor %edi,%edi; syscall");
}
int main(){}

评测结果