user: What is the c source code of the assembly code below?

```asm
<main>:
  endbr64
  push   %r13
  lea    D31(%rip),%r13
  lea    D82(%rip),%rsi
  push   %r12
  mov    %r13,%rdi
  push   %rbp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%r12
  call   <fopen@plt>
  mov    $0x8,%edx
  mov    $0x1,%esi
  mov    %r12,%rdi
  mov    %rax,%rbp
  movabs $0x807060504030201,%rax
  mov    %rbp,%rcx
  mov    %rax,0x10(%rsp)
  call   <fwrite@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  lea    D93(%rip),%rsi
  mov    %r13,%rdi
  movq   $0x0,0x10(%rsp)
  call   <fopen@plt>
  mov    %r12,%rdi
  mov    $0x8,%edx
  mov    $0x1,%esi
  mov    %rax,%rbp
  mov    %rax,%rcx
  call   <fread@plt>
  mov    %rbp,%rdi
  call   <feof@plt>
  test   %rax,%rax
  jne    L72
  lea    D2(%rip),%rdi
  call   <printf@plt>
L15:
  lea    0xf(%rsp),%rdi
  mov    %rbp,%rcx
  mov    $0x1,%edx
  mov    $0x1,%esi
  call   <fread@plt>
  test   %rax,%rax
  jne    L80
  mov    %rbp,%rdi
  call   <feof@plt>
  test   %rax,%rax
  je     L73
  lea    D18(%rip),%rdi
  call   <printf@plt>
L46:
  mov    %rbp,%rdi
  call   <ferror@plt>
  test   %rax,%rax
  jne    L29
  lea    D20(%rip),%rdi
  call   <printf@plt>
  jmp    L89
L72:
  lea    D45(%rip),%rdi
  call   <printf@plt>
  jmp    L15
L80:
  lea    D78(%rip),%rdi
  call   <printf@plt>
L89:
  mov    %rbp,%rdi
  call   <fclose@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L69
  add    $0x20,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L73:
  lea    D95(%rip),%rdi
  call   <printf@plt>
  jmp    L46
L29:
  lea    D98(%rip),%rdi
  call   <printf@plt>
  jmp    L89
L69:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: label: D31
type_guessed: string
name: read_data
arguments: label: D82
type_guessed: string
name: read_data
arguments: label: D93
type_guessed: string
name: read_data
arguments: label: D2
type_guessed: string
name: read_data
arguments: label: D18
type_guessed: string
name: read_data
arguments: label: D20
type_guessed: string
name: read_data
arguments: label: D45
type_guessed: string
name: read_data
arguments: label: D78
type_guessed: string
name: read_data
arguments: label: D95
type_guessed: string
name: read_data
arguments: label: D98
type_guessed: string

tool: D31: feof.temp

tool: D82: w

tool: D93: r

tool: D2: First feof() says that we are NOT at the end of the file.


tool: D18: Second feof() says that we ARE at the end of the file.


tool: D20: ferror() says there are NO errors.


tool: D45: First feof() says that we ARE at the end of the file.


tool: D78: This should never happen. The file should only contain 8 bytes and the fread() above should always fail.


tool: D95: Second feof() says that we are NOT at the end of the file.


tool: D98: ferror() says there ARE errors.


assistant: ```c
int main(void) {
  FILE *out = fopen("feof.temp", "w");
  char bytes[] = {1, 2, 3, 4, 5, 6, 7, 8};
  fwrite(bytes, sizeof(char), 8, out);
  fclose(out);
  for (int i = 0; i < 8; i++)
    bytes[i] = 0;
  FILE *in = fopen("feof.temp", "r");
  fread(bytes, sizeof(char), 8, in);
  if (feof(in) == 0)
    printf("First feof() says that we are NOT at the end of the file.\n");
  else
    printf("First feof() says that we ARE at the end of the file.\n");
  char b;
  if (fread(&b, 1, 1, in) == 0) {
    if (feof(in) == 0)
      printf("Second feof() says that we are NOT at the end of the file.\n");
    else
      printf("Second feof() says that we ARE at the end of the file.\n");
    if (ferror(in) == 0)
      printf("ferror() says there are NO errors.\n");
    else
      printf("ferror() says there ARE errors.\n");
  } else {
    printf("This should never happen. The file should only contain 8 bytes and the fread() above should always fail.\n");
  }
  fclose(in);
  return 0;
}
```