| // RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wno-unused-value %s -verify |
| |
| // prvalue |
| void prvalue() { |
| auto&& x = []()->void { }; |
| auto& y = []()->void { }; // expected-error{{cannot bind to a temporary of type}} |
| } |
| |
| namespace std { |
| class type_info; |
| } |
| |
| struct P { |
| virtual ~P(); |
| }; |
| |
| void unevaluated_operand(P &p, int i) { |
| int i2 = sizeof([] ()->int { return 0; }()); // expected-error{{lambda expression in an unevaluated operand}} |
| const std::type_info &ti1 = typeid([&]() -> P& { return p; }()); |
| const std::type_info &ti2 = typeid([&]() -> int { return i; }()); // expected-error{{lambda expression in an unevaluated operand}} |
| } |
| |
| template<typename T> |
| struct Boom { |
| Boom(const Boom&) { |
| T* x = 1; // expected-error{{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}} \ |
| // expected-error{{cannot initialize a variable of type 'double *' with an rvalue of type 'int'}} |
| } |
| void tickle() const; |
| }; |
| |
| void odr_used(P &p, Boom<int> boom_int, Boom<float> boom_float, |
| Boom<double> boom_double) { |
| const std::type_info &ti1 |
| = typeid([=,&p]() -> P& { boom_int.tickle(); return p; }()); // expected-note{{in instantiation of member function 'Boom<int>::Boom' requested here}} |
| // This does not cause the instantiation of the Boom copy constructor, |
| // because the copy-initialization of the capture of boom_float occurs in an |
| // unevaluated operand. |
| const std::type_info &ti2 |
| = typeid([=]() -> int { boom_float.tickle(); return 0; }()); // expected-error{{lambda expression in an unevaluated operand}} |
| |
| auto foo = [=]() -> int { boom_double.tickle(); return 0; }; // expected-note{{in instantiation of member function 'Boom<double>::Boom' requested here}} |
| } |