1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wno-unused-value %s -verify 2 3 // prvalue 4 void prvalue() { 5 auto&& x = []()->void { }; 6 auto& y = []()->void { }; // expected-error{{cannot bind to a temporary of type}} 7 } 8 9 namespace std { 10 class type_info; 11 } 12 13 struct P { 14 virtual ~P(); 15 }; 16 17 void unevaluated_operand(P &p, int i) { 18 int i2 = sizeof([] ()->int { return 0; }()); // expected-error{{lambda expression in an unevaluated operand}} 19 const std::type_info &ti1 = typeid([&]() -> P& { return p; }()); 20 const std::type_info &ti2 = typeid([&]() -> int { return i; }()); // expected-error{{lambda expression in an unevaluated operand}} 21 } 22 23 template<typename T> 24 struct Boom { 25 Boom(const Boom&) { 26 T* x = 1; // expected-error{{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}} \ 27 // expected-error{{cannot initialize a variable of type 'double *' with an rvalue of type 'int'}} 28 } 29 void tickle() const; 30 }; 31 32 void odr_used(P &p, Boom<int> boom_int, Boom<float> boom_float, 33 Boom<double> boom_double) { 34 const std::type_info &ti1 35 = typeid([=,&p]() -> P& { boom_int.tickle(); return p; }()); // expected-note{{in instantiation of member function 'Boom<int>::Boom' requested here}} 36 // This does not cause the instantiation of the Boom copy constructor, 37 // because the copy-initialization of the capture of boom_float occurs in an 38 // unevaluated operand. 39 const std::type_info &ti2 40 = typeid([=]() -> int { boom_float.tickle(); return 0; }()); // expected-error{{lambda expression in an unevaluated operand}} 41 42 auto foo = [=]() -> int { boom_double.tickle(); return 0; }; // expected-note{{in instantiation of member function 'Boom<double>::Boom' requested here}} 43 } 44
