15 lines · cpp
1// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s2 3struct X { virtual ~X(); };4struct Y : public X { };5struct Z; // expected-note{{forward declaration of 'Z'}}6 7void test(X &x, Y &y, Z &z) {8 // If T is an rvalue reference type, v shall be an expression having9 // a complete class type, and the result is an xvalue of the type10 // referred to by T.11 Y &&yr0 = dynamic_cast<Y&&>(x);12 Y &&yr1 = dynamic_cast<Y&&>(static_cast<X&&>(x));13 Y &&yr2 = dynamic_cast<Y&&>(z); // expected-error{{'Z' is an incomplete type}}14}15