user: 下面的汇编指令对应的C源代码是什么:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movabs $0x6569642f706d742f,%rax
  movabs $0x61662d6362696c74,%rdx
  mov    %rax,-0x30(%rbp)
  mov    %rdx,-0x28(%rbp)
  movabs $0x65742d6573697664,%rax
  movabs $0x58585858582e7473,%rdx
  mov    %rax,-0x20(%rbp)
  mov    %rdx,-0x18(%rbp)
  movw   $0x58,-0x10(%rbp)
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <mkstemp@plt>
  mov    %eax,-0x3c(%rbp)
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <unlink@plt>
  mov    -0x3c(%rbp),%eax
  mov    $0x7a120,%esi
  mov    %eax,%edi
  call   <ftruncate@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x38(%rbp),%rdx
  mov    -0x3c(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <fstat@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x38(%rbp),%eax
  cmp    $0x1,%eax
  jle    L0
  mov    D6(%rip),%rax
  mov    (%rax),%eax
  jmp    L5
L0:
  mov    -0x3c(%rbp),%eax
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <ftruncate@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x38(%rbp),%rdx
  mov    -0x3c(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <fstat@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x34(%rbp),%eax
  cmp    $0x1,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x3c(%rbp),%eax
  mov    $0x7fffffff,%esi
  mov    %eax,%edi
  call   <ftruncate@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x38(%rbp),%rdx
  mov    -0x3c(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <fstat@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x34(%rbp),%eax
  cmp    $0x7fffffff,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x3c(%rbp),%eax
  mov    $0x7fffffff,%esi
  mov    %eax,%edi
  call   <ftruncate@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x38(%rbp),%rdx
  mov    -0x3c(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <fstat@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    $0x0,%edi
  call   <assert@plt>
  mov    D6(%rip),%rax
  mov    (%rax),%eax
L5:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L14
  call   <__stack_chk_fail@plt>
L14:
  leave
  ret
```

assistant: ```c
int main(void) {
  char file[] = "/tmp/dietlibc-fadvise-test.XXXXXX";
  int fd;
  struct stat st;
  fd = mkstemp(file);
  unlink(file);
  assert(ftruncate(fd, 500000) == 0);
  assert(fstat(fd, &st) == 0);
  if (st.st_blocks > 1) {
    return EXIT_SUCCESS;
  }
  assert(ftruncate(fd, (1)) == 0);
  assert(fstat(fd, &st) == 0);
  assert(st.st_size == (1));
  ;
  assert(ftruncate(fd, (0x7fffffff)) == 0);
  assert(fstat(fd, &st) == 0);
  assert(st.st_size == (0x7fffffff));
  ;
  assert(ftruncate(fd, (0x17fffffffull)) == 0);
  assert(fstat(fd, &st) == 0);
  assert(st.st_size == (0x17fffffffull));
  ;
  return EXIT_SUCCESS;
}
```