// 
// __acrt_wcs_to_mbs_cp<__crt_win32_buffer_internal_dynamic_resizing> from 0x1801398b4 to 0x180139a3e (394 bytes)
// 
// 2 xrefs:
// > _wsetlocale_set_cat @ 0x180139ff9
// > <???> @ 0x180203800
// 
// This function is hookable on this platform!
// 
// Using BromaIDA 8.0.0 @ https://github.com/Stazzical/BromaIDA
// Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings
// 

__int64 __fastcall __acrt_wcs_to_mbs_cp<__crt_win32_buffer_internal_dynamic_resizing>(
        const WCHAR *a1,
        __int64 a2,
        UINT a3)
{
  unsigned int v3; // ebx
  void *v7; // rax
  unsigned int v8; // edx
  int v9; // eax
  size_t v10; // rbp
  DWORD LastError; // eax
  unsigned __int64 v12; // rcx
  __int64 v13; // rax
  __int64 v14; // rax
  int v15; // eax

  v3 = 0;
  if ( !a1 )
  {
    if ( *(_BYTE *)(a2 + 40) )
    {
      free_base(*(void **)(a2 + 16));
      *(_BYTE *)(a2 + 40) = 0;
    }
    *(_QWORD *)(a2 + 16) = 0;
    *(_QWORD *)(a2 + 24) = 0;
    goto LABEL_5;
  }
  if ( *a1 )
  {
    v9 = _acrt_WideCharToMultiByte(a3, 0, a1, -1, nullptr, 0, nullptr, nullptr);
    v10 = v9;
    if ( v9 )
    {
      v12 = *(_QWORD *)(a2 + 24);
      if ( v9 > v12 )
      {
        if ( *(_BYTE *)(a2 + 40) )
        {
          free_base(*(void **)(a2 + 16));
          *(_BYTE *)(a2 + 40) = 0;
        }
        v13 = (__int64)malloc_base(v10);
        *(_QWORD *)(a2 + 16) = v13;
        v12 = 0;
        v14 = -v13;
        v8 = v14 == 0 ? 0xC : 0;
        if ( (v14 == 0 ? 0xC : 0) == 0 )
          v12 = v10;
        *(_BYTE *)(a2 + 40) = v8 == 0;
        *(_QWORD *)(a2 + 24) = v12;
        if ( (v14 == 0 ? 0xC : 0) != 0 )
          return v8;
      }
      v15 = _acrt_WideCharToMultiByte(a3, 0, a1, -1, *(CHAR **)(a2 + 16), v12, nullptr, nullptr);
      if ( v15 )
      {
        *(_QWORD *)(a2 + 32) = v15 - 1LL;
        return v3;
      }
    }
    LastError = GetLastError();
    _acrt_errno_map_os_error(LastError);
    return (unsigned int)*errno();
  }
  if ( !*(_QWORD *)(a2 + 24) )
  {
    if ( *(_BYTE *)(a2 + 40) )
    {
      free_base(*(void **)(a2 + 16));
      *(_BYTE *)(a2 + 40) = 0;
    }
    v7 = malloc_base(1u);
    *(_QWORD *)(a2 + 16) = v7;
    v8 = v7 == nullptr ? 0xC : 0;
    *(_BYTE *)(a2 + 40) = v8 == 0;
    *(_QWORD *)(a2 + 24) = v8 == 0;
    if ( (v7 == nullptr ? 0xC : 0) != 0 )
      return v8;
  }
  **(_BYTE **)(a2 + 16) = 0;
LABEL_5:
  *(_QWORD *)(a2 + 32) = 0;
  return v3;
}