| Defined in header <typeinfo> | ||||
|---|---|---|---|---|
|
An exception of this type is thrown when a dynamic_cast to a reference type fails the run-time check (e.g. because the types are not related by inheritance), and also from std::use_facet if the requested facet does not exist in the locale.
Inheritance diagram.
Member functions
| constructs a new bad_cast object (public member function) |
Inherited from std::exception
Member functions
| (destructor)
[virtual] | destructs the exception object (virtual public member function of std::exception) |
| [virtual] | returns an explanatory string (virtual public member function of std::exception) |
Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | #include <iostream>#include <typeinfo> struct Foo { virtual ~Foo() {} };struct Bar { virtual ~Bar() {} }; int main(){ Bar b; try { Foo& f = dynamic_cast<Foo&>(b); } catch(const std::bad_cast& e) { std::cout << e.what() << '\n'; }} |
Possible output:
1 | Bad dynamic cast |
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