std::bad_weak_ptr
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                    | Defined in header  <memory> | ||
| class bad_weak_ptr; | (since C++11) | |
std::bad_weak_ptr is the type of the object thrown as exceptions by the constructors of std::shared_ptr that take std::weak_ptr as the argument, when the std::weak_ptr refers to an already deleted object.
| Contents | 
[edit] Member functions
| constructs the bad_weak_ptrobject(public member function) | 
Inherited from std::exception
Member functions
| [virtual] | destructs the exception object (virtual public member function of std::exception) | 
| [virtual] | returns an explanatory string (virtual public member function of std::exception) | 
[edit] Example
Run this code
#include <memory> #include <iostream> int main() { std::shared_ptr<int> p1(new int(42)); std::weak_ptr<int> wp(p1); p1.reset(); try { std::shared_ptr<int> p2(wp); } catch(const std::bad_weak_ptr& e) { std::cout << e.what() << '\n'; } }
Output:
std::bad_weak_ptr
[edit] See also
| (C++11) | smart pointer with shared object ownership semantics (class template) | 
| (C++11) | weak reference to an object managed by std::shared_ptr (class template) | 



