~ostrstream();
Remarks
Destroys an ostrstream object and its associated strstreambuf object, thus releasing all internally allocated memory. If you used the void-argument constructor, the internally allocated character buffer is released; otherwise, you must release it.
An internally allocated character buffer will not be released if it was previously frozen by an str or strstreambuf::freeze function call.
ostrstream Overview | Output Stream Classes
See Also ostrstream::str, strstreambuf::freeze