RtlUnicodeStringCatString

NTSTATUS __stdcall RtlUnicodeStringCatString(_UNICODE_STRING *DestinationString){
  _WORD *v1; 
  unsigned __int64 Length; 
  wchar_t *Buffer; 
  unsigned __int64 v5; 
  unsigned __int64 v6; 
  NTSTATUS v7; 
  unsigned __int64 MaximumLength; 
  __int64 v9; 
  __int16 v10; 
  unsigned __int64 v11; 
  char *v12; 

  Length = DestinationString->Length;
  Buffer = 0i64;
  v5 = 0i64;
  v6 = 0i64;
  v7 = 0;
  if( (Length & 1) != 0 )
    return -1073741811;
  MaximumLength = DestinationString->MaximumLength;
  if( (MaximumLength & 1) != 0
    || (unsigned __int16)Length > (unsigned __int16)MaximumLength
    || (_WORD)MaximumLength == 0xFFFF )
  {
    return -1073741811;
  }
  if( !DestinationString->Buffer && ((_WORD)Length || (_WORD)MaximumLength) )
  {
    v7 = -1073741811;
  }
  else
  {
    v5 = MaximumLength >> 1;
    Buffer = DestinationString->Buffer;
    v6 = Length >> 1;
  }
  if( v7 >= 0 )
  {
    v9 = 0x7FFFi64;
    v7 = 0;
    v10 = 0;
    v11 = v5 - v6;
    if( !v11 )
      goto LABEL_26;
    v12 = (char *)Buffer + 2 * v6 - (_QWORD)v1;
    do
    {
      if( !v9 )
        break;
      if( !*v1 )
        break;
      *(_WORD *)((char *)v1 + (_QWORD)v12) = *v1;
      --v9;
      ++v1;
      ++v10;
      --v11;
    }
    while( v11 );
    if( !v11 && v9 )
    {
LABEL_26:
      if( *v1 )
        v7 = -2147483643;
    }
    DestinationString->Length = 2 * (v10 + v6);
  }
  return v7;
}

Referenced by: