31 Input/output library [input.output]

31.7 Formatting and manipulators [iostream.format]

31.7.5 Output streams [output.streams]

31.7.5.2 Class template basic_­ostream [ostream]

31.7.5.2.2 Constructors [ostream.cons]

explicit basic_ostream(basic_streambuf<charT, traits>* sb);
Effects: Initializes the base class subobject with basic_­ios<charT, traits>​::​init(sb) ([basic.ios.cons]).
Postconditions: rdbuf() == sb.
basic_ostream(basic_ostream&& rhs);
Effects: Move constructs from the rvalue rhs.
This is accomplished by default constructing the base class and calling basic_­ios<charT, traits>​::​move(rhs) to initialize the base class.
virtual ~basic_ostream();
Remarks: Does not perform any operations on rdbuf().