user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<main>:
  endbr64
  push   %r13
  lea    D126(%rip),%r13
  xor    %esi,%esi
  xor    %eax,%eax
  push   %r12
  mov    %r13,%rdi
  push   %rbp
  call   <strecat@plt>
  cmpb   $0x61,(%rax)
  mov    %rax,%rbp
  jne    L15
  cmpb   $0x0,0x1(%rax)
  jne    L15
  lea    D90(%rip),%r12
  mov    %r13,%rcx
  mov    $0x13,%edx
  mov    %r12,%rsi
  lea    D24(%rip),%rdi
  call   <printf@plt>
L30:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  xor    %edx,%edx
  xor    %eax,%eax
  lea    D102(%rip),%rsi
  lea    D108(%rip),%r13
  call   <strecat@plt>
  mov    %r13,%rsi
  mov    %rax,%rdi
  mov    %rax,%rbp
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L6
  mov    %r13,%rcx
  mov    $0x14,%edx
  mov    %r12,%rsi
  lea    D24(%rip),%rdi
  call   <printf@plt>
L60:
  mov    %rbp,%rdi
  lea    D50(%rip),%r13
  call   <free@plt>
  xor    %ecx,%ecx
  lea    D46(%rip),%rsi
  xor    %eax,%eax
  lea    D70(%rip),%rdi
  lea    D9(%rip),%rdx
  call   <strecat@plt>
  mov    %r13,%rsi
  mov    %rax,%rdi
  mov    %rax,%rbp
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L21
  mov    %r13,%rcx
  mov    $0x15,%edx
  mov    %r12,%rsi
  lea    D24(%rip),%rdi
  call   <printf@plt>
L35:
  mov    %rbp,%rdi
  call   <free@plt>
  pop    %rbp
  xor    %eax,%eax
  pop    %r12
  pop    %r13
  ret
L15:
  lea    D90(%rip),%r12
  mov    %rbp,%rcx
  mov    $0x13,%edx
  mov    %r12,%rsi
  lea    D84(%rip),%rdi
  call   <printf@plt>
  jmp    L30
L21:
  mov    %rbp,%rcx
  mov    $0x15,%edx
  mov    %r12,%rsi
  lea    D84(%rip),%rdi
  call   <printf@plt>
  jmp    L35
L6:
  mov    %rbp,%rcx
  mov    $0x14,%edx
  mov    %r12,%rsi
  lea    D84(%rip),%rdi
  call   <printf@plt>
  jmp    L60
```

tool_calls: name: disassemble_data
arguments: tag: D126
type: string
name: disassemble_data
arguments: tag: D90
type: string
name: disassemble_data
arguments: tag: D24
type: string
name: disassemble_data
arguments: tag: D102
type: string
name: disassemble_data
arguments: tag: D108
type: string
name: disassemble_data
arguments: tag: D50
type: string
name: disassemble_data
arguments: tag: D46
type: string
name: disassemble_data
arguments: tag: D70
type: string
name: disassemble_data
arguments: tag: D9
type: string
name: disassemble_data
arguments: tag: D84
type: string

tool: D126: a

tool: D90: /scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c

tool: D24: %s:%i: OK %s


tool: D102: bbb

tool: D108: abbb

tool: D50: aa/cc

tool: D46: /

tool: D70: aa

tool: D9: cc

tool: D84: %s:%i: FAIL %s


assistant: ```c
int main(void) {
  char *r;
  r = strecat("a", NULL);
  if (!strcmp(r, "a"))
    printf("%s:%i: OK %s\n", "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c", 19, "a");
  else
    printf("%s:%i: FAIL %s\n", "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c", 19, r);
  free(r);
  ;
  r = strecat("a", "bbb", NULL);
  if (!strcmp(r, "abbb"))
    printf("%s:%i: OK %s\n", "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c", 20, "abbb");
  else
    printf("%s:%i: FAIL %s\n", "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c", 20, r);
  free(r);
  ;
  r = strecat("aa", "/", "cc", NULL);
  if (!strcmp(r, "aa/cc"))
    printf("%s:%i: OK %s\n", "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c", 21, "aa/cc");
  else
    printf("%s:%i: FAIL %s\n", "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/arsv/u2ps/refs/heads/master/test/ct_strecat.c", 21, r);
  free(r);
  ;
  return 0;
}
```