20 General utilities library [utilities]

20.8 Smart pointers [smartptr]

20.8.2 Shared-ownership pointers [util.smartptr]

20.8.2.1 Class bad_weak_ptr [util.smartptr.weakptr]

namespace std {
  class bad_weak_ptr: public std::exception {
  public:
    bad_weak_ptr() noexcept;
  };
} // namespace std
1

An exception of type bad_weak_ptr is thrown by the shared_ptr constructor taking a weak_ptr.

bad_weak_ptr() noexcept;

2

Postconditions: what() returns "bad_weak_ptr".