std::basic_istringstream(3cxx) on Linux
The text 241a19287f10, as Debian 6.0 (Squeeze) shipped it.
Controlling input for std::string. This class supports reading from objects of type std::basic_string, using the inherited functions from std::basic_istream. To control the associated sequence, an instance of std::basic_stringbuf is used, which this page refers to as sb.