user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <fork@plt>
  test   %eax,%eax
  js     L14
  jne    L10
  lea    D53(%rip),%rdi
  xor    %edx,%edx
  lea    D10(%rip),%rsi
  call   <execl@plt>
  lea    D23(%rip),%rdi
  call   <puts@plt>
L82:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L29
  xor    %eax,%eax
  add    $0x18,%rsp
  ret
L10:
  xor    %edx,%edx
  lea    0x4(%rsp),%rsi
  mov    %eax,%edi
  call   <waitpid@plt>
  add    $0x1,%eax
  je     L107
L121:
  mov    0x4(%rsp),%edi
  call   <WIFEXITED@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  jne    L54
  call   <WIFSIGNALED@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L90
  call   <WTERMSIG@plt>
  lea    D91(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
L64:
  mov    0x4(%rsp),%esi
  lea    D9(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L82
L14:
  lea    D69(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L82
L54:
  call   <WEXITSTATUS@plt>
  lea    D24(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L64
L90:
  call   <WIFSTOPPED@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  jne    L110
  call   <WIFCONTINUED@plt>
  test   %rax,%rax
  je     L64
  lea    D37(%rip),%rdi
  call   <puts@plt>
  jmp    L64
L107:
  lea    D95(%rip),%rdi
  call   <perror@plt>
  mov    $0x2,%edi
  call   <exit@plt>
  jmp    L121
L110:
  call   <WSTOPSIG@plt>
  lea    D20(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L64
L29:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_tag: D53
type: string
name: parse_data
arguments: data_tag: D10
type: string
name: parse_data
arguments: data_tag: D23
type: string
name: parse_data
arguments: data_tag: D91
type: string
name: parse_data
arguments: data_tag: D9
type: string
name: parse_data
arguments: data_tag: D69
type: string
name: parse_data
arguments: data_tag: D24
type: string
name: parse_data
arguments: data_tag: D37
type: string
name: parse_data
arguments: data_tag: D95
type: string
name: parse_data
arguments: data_tag: D20
type: string

tool: D53: ./newprogram

tool: 

tool: D23: never

tool: D91: killed by signal %d


tool: D9: Parent process: child exit: %d


tool: D69: fork error

tool: D24: exited, status=%d


tool: D37: continued

tool: D95: waitpid

tool: D20: stopped by signal %d


assistant: ```c
int main(int argc, char *argv[]) {
  int pid;
  pid = fork();
  if (pid < 0) {
    perror("fork error");
    exit(1);
  } else if (pid == 0) {
    execl("./newprogram", "", NULL);
    printf("never\n");
  } else {
    int status;
    int w = waitpid(pid, &status, 0);
    if (w == -1) {
      perror("waitpid");
      exit(2);
    }
    if (WIFEXITED(status)) {
      printf("exited, status=%d\n", WEXITSTATUS(status));
    } else if (WIFSIGNALED(status)) {
      printf("killed by signal %d\n", WTERMSIG(status));
    } else if (WIFSTOPPED(status)) {
      printf("stopped by signal %d\n", WSTOPSIG(status));
    } else if (WIFCONTINUED(status)) {
      printf("continued\n");
    }
    printf("Parent process: child exit: %d\n", status);
  }
  return 0;
}
```