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.
Inheritance diagram
[edit] Member functions constructs a newbad_weak_ptr object
bad_weak_ptr object
bad_weak_ptr() noexcept;
(1) (since C++11)bad_weak_ptr( const bad_weak_ptr& other ) noexcept;
(2) (since C++11)Constructs a new bad_weak_ptr object with an implementation-defined null-terminated byte string which is accessible through what().
1) Default constructor.
2)Copy constructor. If
*thisand
otherboth have dynamic type
std::bad_weak_ptr
then
std::strcmp(what(), other.what()) == 0.
Parameters other - another exception object to copy std::bad_weak_ptr::operator=bad_weak_ptr& operator=( const bad_weak_ptr& other ) noexcept;
(since C++11)Assigns the contents with those of other. If *this and other both have dynamic type std::bad_weak_ptr then std::strcmp(what(), other.what()) == 0 after assignment.
*this
std::bad_weak_ptr::whatvirtual const char* what() const noexcept;
(since C++11)Returns the explanatory string.
Return valuePointer to an implementation-defined null-terminated string with explanatory information. The string is suitable for conversion and display as a std::wstring. The pointer is guaranteed to be valid at least until the exception object from which it is obtained is destroyed, or until a non-const member function (e.g. copy assignment operator) on the exception object is called.
NotesImplementations are allowed but not required to override what().
std::exception) [edit] returns an explanatory string
std::exception) [edit] [edit] Example [edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR Applied to Behavior as published Correct behavior LWG 2376 C++11 callingwhat on a default-constructed bad_weak_ptr was required to return "bad_weak_ptr" the return value is implementation-defined [edit] See also
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