user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movb   $0x0,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x7f,-0x9(%rbp)
  movb   $0x80,-0x9(%rbp)
  movb   $0x7e,-0x9(%rbp)
  movb   $0x80,-0x9(%rbp)
  movb   $0xfe,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0xfc,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x78,-0x9(%rbp)
  movb   $0x80,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x7f,-0x9(%rbp)
  movb   $0xfe,-0x9(%rbp)
  movb   $0xfc,-0x9(%rbp)
  movb   $0x1,-0x9(%rbp)
  movb   $0x80,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x80,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x80,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movb   $0x0,-0x9(%rbp)
  movzbl -0x9(%rbp),%eax
  test   %al,%al
  je     L42
  mov    $0xffffffff,%eax
  jmp    L17
L42:
  movb   $0xff,-0x9(%rbp)
  movzbl -0x9(%rbp),%eax
  cmp    $0xff,%al
  je     L40
  mov    $0xffffffff,%eax
  jmp    L17
L40:
  movb   $0x1,-0x9(%rbp)
  mov    $0x0,%eax
L17:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L45
  call   <__stack_chk_fail@plt>
L45:
  leave
  ret
```

assistant: ```c
int main(int argc, const char **argv) {
  unsigned char res;
  if (__builtin_mul_overflow((unsigned char)0x0, (unsigned char)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x0, (unsigned char)0x7F, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x0, (unsigned char)0x80, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x1, (unsigned char)0x7F, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x1, (unsigned char)0x80, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x2, (unsigned char)0x3F, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x2, (unsigned char)0xC0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x2, (unsigned char)0x7F, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x2, (unsigned char)0x80, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x4, (unsigned char)0x7F, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x4, (unsigned char)0x80, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x0F, (unsigned char)0x8, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x10, (unsigned char)0x8, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x10, (unsigned char)0x10, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x7F, (unsigned char)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x7F, (unsigned char)0x1, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x7F, (unsigned char)0x2, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x7F, (unsigned char)0x4, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x7F, (unsigned char)0x7F, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x7F, (unsigned char)0x80, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x80, (unsigned char)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0x80, (unsigned char)0x1, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x80, (unsigned char)0x2, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x80, (unsigned char)0x7F, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0x80, (unsigned char)0x80, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0xFF, (unsigned char)0x0, &res)) {
    return -1;
  }
  if (res != 0x0) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned char)0xFF, (unsigned char)0x1, &res)) {
    return -1;
  }
  if (res != 0xFF) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned char)0xFF, (unsigned char)0xFF, &res)) {
    return -1;
  }
  return 0;
}
```