user: What would the C source look like for the assembly code provided here?

```asm
<test_getcwd>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D102(%rip),%rax
  mov    %rax,%rdi
  call   <chdir@plt>
  test   %rax,%rax
  je     L58
  mov    $0x20,%edx
  lea    D19(%rip),%rax
  mov    %rax,%rsi
  lea    D114(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  jmp    L102
L58:
  lea    -0x70(%rbp),%rax
  mov    $0x64,%esi
  mov    %rax,%rdi
  call   <getcwd@plt>
  lea    -0x70(%rbp),%rdx
  cmp    %rdx,%rax
  je     L0
  mov    $0x21,%edx
  lea    D108(%rip),%rax
  mov    %rax,%rsi
  lea    D114(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  jmp    L102
L0:
  lea    -0x70(%rbp),%rax
  lea    D102(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  je     L55
  mov    $0x22,%edx
  lea    D109(%rip),%rax
  mov    %rax,%rsi
  lea    D114(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  jmp    L102
L55:
  mov    $0x0,%esi
  mov    $0x0,%edi
  call   <getcwd@plt>
  mov    %rax,-0x78(%rbp)
  cmpq   $0x0,-0x78(%rbp)
  jne    L44
  mov    $0x25,%edx
  lea    D69(%rip),%rax
  mov    %rax,%rsi
  lea    D114(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  jmp    L102
L44:
  mov    -0x78(%rbp),%rax
  lea    D102(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  je     L49
  mov    $0x26,%edx
  lea    D93(%rip),%rax
  mov    %rax,%rsi
  lea    D114(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  jmp    L102
L49:
  mov    -0x78(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    $0x1,%eax
L102:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L78
  call   <__stack_chk_fail@plt>
L78:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: tag: D102
type_guessed: string
name: unpack_data
arguments: tag: D19
type_guessed: string
name: unpack_data
arguments: tag: D114
type_guessed: string
name: unpack_data
arguments: tag: D108
type_guessed: string
name: unpack_data
arguments: tag: D109
type_guessed: string
name: unpack_data
arguments: tag: D69
type_guessed: string
name: unpack_data
arguments: tag: D93
type_guessed: string

tool: D102: /

tool: D19: 0 == chdir("/")

tool: D114: expression '%s' untrue at %d


tool: D108: buf == getcwd(buf, sizeof buf)

tool: D109: !strcmp(buf, "/")

tool: D69: NULL != d

tool: D93: !strcmp(d, "/")

assistant: ```c
int test_getcwd(void) {
  char buf[100], *d;
  do {
    if (!(0 == chdir("/"))) {
      printf("expression '%s' untrue at %d\n", "0 == chdir(\"/\")", 32);
      return 0;
    }
  } while (0);
  do {
    if (!(buf == getcwd(buf, sizeof buf))) {
      printf("expression '%s' untrue at %d\n", "buf == getcwd(buf, sizeof buf)", 33);
      return 0;
    }
  } while (0);
  do {
    if (!(!strcmp(buf, "/"))) {
      printf("expression '%s' untrue at %d\n", "!strcmp(buf, \"/\")", 34);
      return 0;
    }
  } while (0);
  d = getcwd(NULL, 0);
  do {
    if (!(NULL != d)) {
      printf("expression '%s' untrue at %d\n", "NULL != d", 37);
      return 0;
    }
  } while (0);
  do {
    if (!(!strcmp(d, "/"))) {
      printf("expression '%s' untrue at %d\n", "!strcmp(d, \"/\")", 38);
      return 0;
    }
  } while (0);
  free(d);
  return 1;
}
```