// 
// __crt_mbstring::__mbrtowc_utf8 from 0x18013da70 to 0x18013daa9 (57 bytes)
// 
// 2 xrefs:
// > _mbtowc_l @ 0x18013730e
// > <???> @ 0x180203b0c
// 
// 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
// 

unsigned __int64 __fastcall __crt_mbstring::__mbrtowc_utf8(
        __crt_mbstring *this,
        char32_t *a2,
        const char *a3,
        unsigned __int64 a4)
{
  unsigned __int64 result; // rax
  __int16 v6; // dx
  struct _Mbstatet *v7; // [rsp+20h] [rbp-18h] BYREF

  result = __crt_mbstring::__mbrtoc32_utf8((__crt_mbstring *)&v7, a2, a3, a4, v7);
  if ( result <= 4 )
  {
    v6 = (__int16)v7;
    if ( (unsigned int)v7 > 0xFFFF )
      v6 = -3;
    if ( this )
      *(_WORD *)this = v6;
  }
  return result;
}