for (size_t i = 0; i < str.size(); i++) {
		std::string::reference pch = str[i];
		char* ptr = &pch;
		sanitize_one_char_by_pointer(ptr, '\0'); // For instance on Windows, call SecureZeroMemory()
	}

	for (size_t i = 0; i < str.size(); i++) {
		str[i] = '\0';
		std::string::reference pch = str[i];
		volatile char* ptr = &pch;
	}