user: Demonstrate the C code that generates the assembly output below:

```asm
<test_mx_strvec>:
  endbr64
  push   %r14
  lea    D101(%rip),%r14
  push   %r13
  lea    D44(%rip),%r13
  push   %r12
  push   %rbp
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbp
  call   <mx_strvec_new@plt>
  lea    D37(%rip),%rdi
  cltq
  mov    %rax,(%rsp)
  call   <strdup@plt>
  mov    %rbp,%rdi
  mov    %rax,%rsi
  xor    %eax,%eax
  call   <mx_strvec_push_str@plt>
  lea    D96(%rip),%rdi
  call   <strdup@plt>
  mov    %rbp,%rdi
  mov    %rax,%rsi
  xor    %eax,%eax
  call   <mx_strvec_push_str@plt>
  lea    D73(%rip),%rdi
  call   <strdup@plt>
  mov    %rbp,%rdi
  mov    %rax,%rsi
  xor    %eax,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  mov    %r13,%rdi
  xor    %eax,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%r12
  xor    %eax,%eax
  mov    %r12,%rdi
  call   <assert@plt>
  lea    D2(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  xor    %eax,%eax
  call   <assert@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    (%rsp),%rsi
  mov    %r14,%rdi
  xor    %eax,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%r12
  xor    %eax,%eax
  mov    %r12,%rdi
  call   <assert@plt>
  lea    D109(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  xor    %eax,%eax
  call   <assert@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    (%rsp),%rdi
  xor    %eax,%eax
  call   <mx_strvec_free@plt>
  xor    %eax,%eax
  call   <mx_strvec_new@plt>
  mov    %r13,%rdi
  lea    D66(%rip),%r13
  movslq %eax,%rsi
  xor    %eax,%eax
  mov    %rsi,(%rsp)
  call   <mx_strvec_join@plt>
  movslq %eax,%r12
  xor    %eax,%eax
  mov    %r12,%rdi
  call   <assert@plt>
  xor    %edi,%edi
  cmpb   $0x0,(%r12)
  sete   %dil
  xor    %eax,%eax
  call   <assert@plt>
  mov    %r12,%rdi
  call   <free@plt>
  lea    D100(%rip),%rdi
  call   <strdup@plt>
  mov    %rbp,%rdi
  mov    %rax,%rsi
  xor    %eax,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  mov    %r13,%rdi
  xor    %eax,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%r12
  xor    %eax,%eax
  mov    %r12,%rdi
  call   <assert@plt>
  movzbl (%r12),%eax
  sub    $0x41,%eax
  jne    L5
  movzbl 0x1(%r12),%eax
L5:
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  xor    %eax,%eax
  call   <assert@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    %r14,%rdi
  call   <strdup@plt>
  mov    %rbp,%rdi
  mov    %rax,%rsi
  xor    %eax,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  mov    %r13,%rdi
  xor    %eax,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%r12
  xor    %eax,%eax
  mov    %r12,%rdi
  call   <assert@plt>
  movzbl (%r12),%eax
  sub    $0x41,%eax
  jne    L27
  movzbl 0x1(%r12),%eax
  sub    $0x78,%eax
  je     L11
L27:
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  xor    %eax,%eax
  call   <assert@plt>
  mov    %r12,%rdi
  call   <free@plt>
  lea    D18(%rip),%rdi
  call   <strdup@plt>
  mov    %rbp,%rdi
  mov    %rax,%rsi
  xor    %eax,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  mov    %r13,%rdi
  xor    %eax,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbp
  xor    %eax,%eax
  mov    %rbp,%rdi
  call   <assert@plt>
  lea    D102(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  xor    %edi,%edi
  test   %eax,%eax
  sete   %dil
  xor    %eax,%eax
  call   <assert@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    (%rsp),%rdi
  xor    %eax,%eax
  call   <mx_strvec_free@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L35
  add    $0x18,%rsp
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   (%rax)
L11:
  movzbl 0x2(%r12),%eax
  jmp    L27
L35:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_label: D101
type: string
name: disassemble_data
arguments: data_label: D44
type: string
name: disassemble_data
arguments: data_label: D37
type: string
name: disassemble_data
arguments: data_label: D96
type: string
name: disassemble_data
arguments: data_label: D73
type: string
name: disassemble_data
arguments: data_label: D2
type: string
name: disassemble_data
arguments: data_label: D109
type: string
name: disassemble_data
arguments: data_label: D66
type: string
name: disassemble_data
arguments: data_label: D100
type: string
name: disassemble_data
arguments: data_label: D18
type: string
name: disassemble_data
arguments: data_label: D102
type: string

tool: 

tool: D44: XXX

tool: D37: Hallo

tool: D96: Bla

tool: D73: lall

tool: D2: HalloXXXBlaXXXlall

tool: D109: HalloBlalall

tool: D66: x

tool: D100: A

tool: D18: B

tool: D102: AxxB

assistant: ```c
void test_mx_strvec() {
  char **strvec;
  char *str;
  strvec = mx_strvec_new();
  mx_strvec_push_str(&strvec, strdup("Hallo"));
  mx_strvec_push_str(&strvec, strdup("Bla"));
  mx_strvec_push_str(&strvec, strdup("lall"));
  assert(str = mx_strvec_join("XXX", strvec));
  assert(strcmp(str, "HalloXXXBlaXXXlall") == 0);
  free(str);
  assert(str = mx_strvec_join("", strvec));
  assert(strcmp(str, "HalloBlalall") == 0);
  free(str);
  mx_strvec_free(strvec);
  strvec = mx_strvec_new();
  assert(str = mx_strvec_join("XXX", strvec));
  assert(strcmp(str, "") == 0);
  free(str);
  mx_strvec_push_str(&strvec, strdup("A"));
  assert(str = mx_strvec_join("x", strvec));
  assert(strcmp(str, "A") == 0);
  free(str);
  mx_strvec_push_str(&strvec, strdup(""));
  assert(str = mx_strvec_join("x", strvec));
  assert(strcmp(str, "Ax") == 0);
  free(str);
  mx_strvec_push_str(&strvec, strdup("B"));
  assert(str = mx_strvec_join("x", strvec));
  assert(strcmp(str, "AxxB") == 0);
  free(str);
  mx_strvec_free(strvec);
}
```