20 lines · cpp
1// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s2 3// If T is an lvalue reference type or an rvalue reference to function4// type, the result is an lvalue; if T is an rvalue reference to5// object type, the result is an xvalue;6 7unsigned int f(int);8 9template<typename T> T&& xvalue();10void test_classification(char *ptr) {11 int (&fr0)(int) = reinterpret_cast<int (&&)(int)>(f);12 int &&ir0 = reinterpret_cast<int &&>(*ptr);13 int &&ir1 = reinterpret_cast<int &&>(0); // expected-error {{rvalue to reference type}}14 int &&ir2 = reinterpret_cast<int &&>('a'); // expected-error {{rvalue to reference type}}15 int &&ir3 = reinterpret_cast<int &&>(xvalue<char>());16 // Per DR1268, reinterpret_cast can convert between lvalues and xvalues.17 int &ir4 = reinterpret_cast<int &>(xvalue<char>());18 int &&ir5 = reinterpret_cast<int &&>(*ptr);19}20