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std::ostrstream::~ostrstream

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< cpp‎ | io‎ | ostrstream
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virtual ~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.

Parameters

(none)

Notes

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

Example

#include <strstream>
#include <iostream>
 
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

Output:

1.23
1.23