20 General utilities library [utilities]

20.7 Smart pointers [smartptr]

20.7.2 Shared-ownership pointers [util.smartptr]

20.7.2.2 Class template shared_ptr [util.smartptr.shared]

20.7.2.2.2 shared_ptr destructor [util.smartptr.shared.dest]

~shared_ptr();

1

Effects:

  • (1.1)

    If *this is empty or shares ownership with another shared_ptr instance (use_count() > 1), there are no side effects.

  • (1.2)

    Otherwise, if *this owns an object p and a deleter d, d(p) is called.

  • (1.3)

    Otherwise, *this owns a pointer p, and delete p is called.

2

[ Note: Since the destruction of *this decreases the number of instances that share ownership with *this by one, after *this has been destroyed all shared_ptr instances that shared ownership with *this will report a use_count() that is one less than its previous value.  — end note ]