src/unittest/utf8.cc:573:124: error: expression with side effects has no effect in an unevaluated context [-Werror,-Wunevaluated-expression]
        switch (0) case 0: default: if (const ::testing::AssertionResult gtest_ar = (::testing::internal:: EqHelper<(sizeof(::testing::internal::IsNullLiteralHelper(*current++)) == 1)>::Compare("*current++", "*it++", *current++, *it++))) ; else return ::testing::internal::AssertHelper(::testing::TestPartResult::kFatalFailure, "src/unittest/utf8.cc", 573, gtest_ar.failure_message()) = ::testing::Message();