void CheckStringsEqual(TestResults& results, char const* expected, char const* actual, TestDetails const& details)
{
  // WAS: if (std::strcmp(expected, actual))
  if (actual == NULL || std::strcmp(expected, actual))
  {
    UnitTest::MemoryOutStream stream;
    // WAS: stream << "Expected " << expected << " but was " << actual;
    stream << "Expected " << expected << " but was " << (actual ? actual : "(null)");
    results.OnTestFailure(details, stream.GetText());
  }
}