NAME¶

std::strstream::~strstream - std::strstream::~strstream

Synopsis¶

virtual ~strstream();

Destroys a std::strstream 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 strstream and freeze(false) was not called after
that, this destructor leaks memory.

Example¶

// Run this code

#include <strstream>
#include <iostream>

int main()
{
{
std::ostrstream s; // dynamic buffer
s << 1.23 << std::ends;
std::cout << s.str() << '\n';
s.freeze(false);
} // destructor called, buffer deallocated

{
std::ostrstream s;
s << 1.23 << std::ends;
std::cout << s.str() << '\n';
// buf.freeze(false);
} // destructor called, memory leaked

{
std::istrstream s("1.23"); // constant buffer
double d;
s >> d;
std::cout << d << '\n';
} // destructor called, nothing to deallocate
}

Output:¶

1.23
1.23
1.23