std::strstream::~strstream
From cppreference.com
| 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.
[edit] Parameters
(none)
[edit] Notes
If str() was called on a dynamic strstream and freeze(false) was not called after that, this destructor leaks memory.
[edit] Example
Run this code
#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 { 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
