user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    $0x80,%edi
  sub    $0x50,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x48(%rsp)
  xor    %eax,%eax
  call   <malloc@plt>
  mov    $0x8,%esi
  lea    D84(%rip),%rdi
  mov    %rax,%rbp
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    D1(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D102(%rip),%rdi
  mov    %rsp,%rbp
  call   <helper@plt>
  mov    $0x40,%esi
  lea    D112(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    D136(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D5(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D24(%rip),%rdi
  call   <helper@plt>
  mov    $0x8,%esi
  lea    D127(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x10,%esi
  lea    D76(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D124(%rip),%rsi
  lea    D27(%rip),%rdi
  call   <helper@plt>
  mov    $0x8,%esi
  lea    D93(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    D85(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D4(%rip),%rdi
  call   <helper@plt>
  mov    0x48(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L7
  add    $0x50,%rsp
  xor    %eax,%eax
  pop    %rbp
  ret
L7:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_tag: D84
data_type: string
name: parse_data
arguments: data_tag: D1
data_type: string
name: parse_data
arguments: data_tag: D102
data_type: string
name: parse_data
arguments: data_tag: D112
data_type: string
name: parse_data
arguments: data_tag: D136
data_type: string
name: parse_data
arguments: data_tag: D5
data_type: string
name: parse_data
arguments: data_tag: D24
data_type: string
name: parse_data
arguments: data_tag: D127
data_type: string
name: parse_data
arguments: data_tag: D76
data_type: string
name: parse_data
arguments: data_tag: D124
data_type: string
name: parse_data
arguments: data_tag: D27
data_type: string
name: parse_data
arguments: data_tag: D93
data_type: string
name: parse_data
arguments: data_tag: D85
data_type: string
name: parse_data
arguments: data_tag: D4
data_type: string

tool: D84: sizeof(s1) = %d


tool: D1: strlen(s1) = %d


tool: D102: s1

tool: D112: sizeof(s2) = %d


tool: D136: strlen(s2) = %d


tool: D5: s2: "%s"


tool: D24: s2

tool: D127: sizeof(s3) = %d


tool: D76: strlen(s3) = %d


tool: D124: this is a string

tool: D27: s3

tool: D93: sizeof(s4) = %d


tool: D85: strlen(s4) = %d


tool: D4: s4

assistant: ```c
int main(int argc, char *argv[]) {
  char *s1 = malloc(128);
  char s2[64];
  char *s3 = "this is a string";
  char *s4 = s2;
  printf("sizeof(s1) = %d\n", (int)sizeof(s1));
  printf("strlen(s1) = %d\n", (int)strlen(s1));
  helper("s1", s1);
  printf("sizeof(s2) = %d\n", (int)sizeof(s2));
  printf("strlen(s2) = %d\n", (int)strlen(s2));
  printf("s2: \"%s\"\n", s2);
  helper("s2", s2);
  printf("sizeof(s3) = %d\n", (int)sizeof(s3));
  printf("strlen(s3) = %d\n", (int)strlen(s3));
  helper("s3", s3);
  printf("sizeof(s4) = %d\n", (int)sizeof(s4));
  printf("strlen(s4) = %d\n", (int)strlen(s4));
  helper("s4", s4);
  return 0;
}
```