Annex D (normative) Compatibility features [depr]

D.7 char* streams [depr.str.strstreams]

D.7.2 Class istrstream [depr.istrstream]

D.7.2.1 istrstream constructors [depr.istrstream.cons]

explicit istrstream(const char* s); explicit istrstream(char* s);
Effects: Constructs an object of class istrstream, initializing the base class with istream(&sb) and initializing sb with strstreambuf(s,0).
s shall designate the first element of an ntbs.
istrstream(const char* s, streamsize n); istrstream(char* s, streamsize n);
Effects: Constructs an object of class istrstream, initializing the base class with istream(&sb) and initializing sb with strstreambuf(s,n).
s shall designate the first element of an array whose length is n elements, and n shall be greater than zero.