std::strstream::~strstream
From cppreference.com
virtual ~strstream(); | (deprecated in C++98) (removed in C++26) | |
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 <iostream>#include <strstream> 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 bufferdouble d; s >> d;std::cout<< d <<'\n';}// destructor called, nothing to deallocate}
Output:
1.23 1.23 1.23
