std::strstream::~strstream
From cppreference.com
C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Input/output library
Print functions (C++23)
Buffers
(C++23)
(C++98/26*)
(C++20)
Streams
Abstractions
File I/O
String I/O
Array I/O
(C++23)
(C++23)
(C++23)
(C++98/26*)
(C++98/26*)
(C++98/26*)
Synchronized Output
(C++20)
Types
Error category interface
(C++11)
(C++11)
std::strstream
Member functions
strstream::~strstream
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 buffer double d; s >> d; std::cout << d << '\n'; } // destructor called, nothing to deallocate }
Output:
1.23 1.23 1.23