std::basic_streambuf<CharT,Traits>::~basic_streambuf

From cppreference.com
< cpp‎ | io‎ | basic streambuf
 
 
 
 
virtual ~basic_streambuf();

This destructor has no effect: the members of this basic_streambuf (the pointers and the locale) are destructed in accordance with the usual object destruction sequence after this destructor returns. However, since it is declared public virtual, it allows the objects that are derived from std::basic_streambuf to be deleted through a pointer to base class.

Parameters

(none)

Example

#include <iostream>
#include <fstream>
 
int main()
{
    std::filebuf* fbp = new std::filebuf;
    fbp->open("test.txt", std::ios_base::out);
    fbp->sputn("Hello\n", 6);
 
    std::streambuf* sbp = fbp;
    delete sbp; // the file is closed, output flushed and written
 
    std::ifstream f("test.txt");
    std::cout << f.rdbuf(); // proof
}

Output:

Hello

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 54 C++98 the effect of the destructor was not specified specified as no effect

See also

constructs a basic_streambuf object
(protected member function)