user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  xor    %eax,%eax
  ret
```

assistant: ```c
int main(int argc, const char **argv) {
  unsigned long res;
  return 0;
  if (__builtin_mul_overflow((unsigned long)0x0, (unsigned long)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x0, (unsigned long)0x7FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x0, (unsigned long)0x8000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x1, (unsigned long)0x7FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x1, (unsigned long)0x8000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x2, (unsigned long)0x3FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x2, (unsigned long)0xC000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x2, (unsigned long)0x7FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x2, (unsigned long)0x8000000000000000, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x4, (unsigned long)0x7FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x4, (unsigned long)0x8000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x0F, (unsigned long)0x8, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x1000000000000000, (unsigned long)0x8, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x1000000000000000, (unsigned long)0x1000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x7FFFFFFFFFFFFFFF, (unsigned long)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x7FFFFFFFFFFFFFFF, (unsigned long)0x1, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x7FFFFFFFFFFFFFFF, (unsigned long)0x2, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x7FFFFFFFFFFFFFFF, (unsigned long)0x4, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x7FFFFFFFFFFFFFFF, (unsigned long)0x7FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x7FFFFFFFFFFFFFFF, (unsigned long)0x8000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x8000000000000000, (unsigned long)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0x8000000000000000, (unsigned long)0x1, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x8000000000000000, (unsigned long)0x2, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x8000000000000000, (unsigned long)0x7FFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0x8000000000000000, (unsigned long)0x8000000000000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0xFFFFFFFFFFFFFFFF, (unsigned long)0x0, &res)) {
    return -1;
  }
  if (res != 0x0) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned long)0xFFFFFFFFFFFFFFFF, (unsigned long)0x1, &res)) {
    return -1;
  }
  if (res != 0xFFFFFFFFFFFFFFFF) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned long)0xFFFFFFFFFFFFFFFF, (unsigned long)0xFFFFFFFFFFFFFFFF, &res)) {
    return -1;
  }
  return 0;
}
```