#include <memory>
#include <iostream>
struct A : public std::enable_shared_from_this<A>
{
~A()
{
auto this_ptr = shared_from_this(); // std::bad_weak_ptr exception here.
std::cout << "this: " << this_ptr;
}
};
int main()
{
auto a = std::make_shared<A>();
a.reset();
return 0;
}
I'm getting std::bad_weak_ptr exception when calling shared_from_this(). Is it by design? Yes, it might be dangerous as this pointer can't be used after the destructor returns, but I don't see a reason why it would be technically impossible to get the pointer here, since the shared pointer object obviously still exists and can be used. Is there any way to circumvent this, short of writing my own enable_shared_from_this analog (which I would rather not do)?
Aucun commentaire:
Enregistrer un commentaire