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/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
struct A {
virtual void f() {}
};
struct B : public A {};
struct C {};
void f() {
A a;
B b;
A *ap = &b;
B *b1 = dynamic_cast<B *>(&a);
B *b2 = dynamic_cast<B *>(ap);
C *c = dynamic_cast<C *>(ap);
A &ar = dynamic_cast<A &>(*ap);
B &br = dynamic_cast<B &>(*ap);
C &cr = dynamic_cast<C &>(*ap);
}