std::ostrstream::~ostrstream

Destroys a std::ostrstream object, which also destroys the member std::strstreambuf, which may call the deallocation function if the underlying buffer was dynamically-allocated and not frozen.

# Declarations

virtual ~ostrstream();

(deprecated in C++98) (removed in C++26)

# Notes

If str() was called on a dynamic ostrstream and freeze(false) was not called after that, this destructor leaks memory.

# Example

#include <iostream>
#include <strstream>
 
int main()
{
    {
        std::ostrstream s; // dynamic buffer 
        s << 1.23;
        std::cout << s.str() << '\n';
        s.freeze(false);
    } // destructor called, buffer deallocated 
 
    {
        std::ostrstream s;
        s << 1.23;
        std::cout << s.str() << '\n';
//      buf.freeze(false);
    } // destructor called, memory leaked
}