user: What is the c source code of the assembly code below?

```asm
<test_mx_strvec>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <mx_strvec_new@plt>
  cltq
  mov    %rax,(%rsp)
  lea    D110(%rip),%rdi
  call   <strdup@plt>
  mov    %rax,%rsi
  mov    %rsp,%rbx
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_push_str@plt>
  lea    D103(%rip),%rdi
  call   <strdup@plt>
  mov    %rax,%rsi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_push_str@plt>
  lea    D36(%rip),%rdi
  call   <strdup@plt>
  mov    %rax,%rsi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  lea    D37(%rip),%r13
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <assert@plt>
  lea    D86(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  sete   %dil
  movzbl %dil,%edi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    (%rsp),%rsi
  lea    D107(%rip),%r12
  mov    %r12,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <assert@plt>
  lea    D41(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  sete   %dil
  movzbl %dil,%edi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    (%rsp),%rdi
  mov    $0x0,%eax
  call   <mx_strvec_free@plt>
  mov    $0x0,%eax
  call   <mx_strvec_new@plt>
  movslq %eax,%rsi
  mov    %rsi,(%rsp)
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <assert@plt>
  cmpb   $0x0,0x0(%rbp)
  sete   %dil
  movzbl %dil,%edi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  lea    D79(%rip),%r14
  mov    %r14,%rdi
  call   <strdup@plt>
  mov    %rax,%rsi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  lea    D102(%rip),%r13
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %r14,%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  sete   %dil
  movzbl %dil,%edi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r12,%rdi
  call   <strdup@plt>
  mov    %rax,%rsi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <assert@plt>
  lea    D10(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  sete   %dil
  movzbl %dil,%edi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  lea    D13(%rip),%rdi
  call   <strdup@plt>
  mov    %rax,%rsi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_push_str@plt>
  mov    (%rsp),%rsi
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <mx_strvec_join@plt>
  movslq %eax,%rbx
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <assert@plt>
  lea    D81(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  sete   %dil
  movzbl %dil,%edi
  mov    $0x0,%eax
  call   <assert@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    (%rsp),%rdi
  mov    $0x0,%eax
  call   <mx_strvec_free@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L0
  add    $0x10,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L0:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D110
type_infered: string
name: retrieve_data
arguments: tag: D103
type_infered: string
name: retrieve_data
arguments: tag: D36
type_infered: string
name: retrieve_data
arguments: tag: D37
type_infered: string
name: retrieve_data
arguments: tag: D86
type_infered: string
name: retrieve_data
arguments: tag: D107
type_infered: string
name: retrieve_data
arguments: tag: D41
type_infered: string
name: retrieve_data
arguments: tag: D79
type_infered: string
name: retrieve_data
arguments: tag: D102
type_infered: string
name: retrieve_data
arguments: tag: D10
type_infered: string
name: retrieve_data
arguments: tag: D13
type_infered: string
name: retrieve_data
arguments: tag: D81
type_infered: string

tool: D110: Hallo

tool: D103: Bla

tool: D36: lall

tool: D37: XXX

tool: D86: HalloXXXBlaXXXlall

tool: 

tool: D41: HalloBlalall

tool: D79: A

tool: D102: x

tool: D10: Ax

tool: D13: B

tool: D81: 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);
}
```