gcc/libstdc++-v3/testsuite/27_io
..
basic_filebuf
basic_fstream
basic_ifstream
basic_ios
basic_iostream
basic_istream
basic_istringstream
basic_ofstream
basic_ostream
basic_ostringstream
basic_streambuf
basic_stringbuf
basic_stringstream
fpos
headers
ios_base
manipulators
objects
types