294 consteval const A &to_lvalue_ref(const A &&a) {  in to_lvalue_ref()  function
302   { A k = to_lvalue_ref(A()); }// expected-error {{is not a constant expression}}  in test()
304   { A k = to_lvalue_ref(A().ret_a()); } // expected-error {{is not a constant expression}}  in test()
313   { int k = const_a_ref(to_lvalue_ref(A().ret_a())); }  in test()
314   { int k = const_a_ref(to_lvalue_ref(std::move(a))); }  in test()
316   { int k = by_value_a(to_lvalue_ref(std::move(a))); }  in test()
351 consteval const A &to_lvalue_ref(const A &&a) {  in to_lvalue_ref()  function
360   { A k = to_lvalue_ref(A()); } // expected-error {{is not a constant expression}}  in test()
362   { A k = to_lvalue_ref(A().ret_a()); } // expected-error {{is not a constant expression}}  in test()
371   { int k = const_a_ref(to_lvalue_ref(A().ret_a())); }  in test()
372   { int k = const_a_ref(to_lvalue_ref(std::move(a))); }  in test()
374   { int k = by_value_a(to_lvalue_ref(static_cast<const A&&>(a))); }  in test()
558 constexpr const Copy &to_lvalue_ref(const Copy &&a) {  in to_lvalue_ref()  function
570 …{ Copy c(to_lvalue_ref((Copy(&f_eval)))); }// expected-error {{is not a constant expression}} expe…  in test()
571   { Copy c(to_lvalue_ref(std::move(C))); }  in test()
572 …{ Copy c(to_lvalue_ref(std::move(Copy(&f_eval)))); }// expected-error {{is not a constant expressi…  in test()
577 …{ Copy c = Copy(to_lvalue_ref(Copy(&f_eval))); }// expected-error {{is not a constant expression}}…  in test()
578   { Copy c = Copy(to_lvalue_ref(std::move(C))); }  in test()
579 …{ Copy c = Copy(to_lvalue_ref(std::move(Copy(&f_eval)))); }// expected-error {{is not a constant e…  in test()
584 …{ Copy c; c = Copy(to_lvalue_ref(Copy(&f_eval))); }// expected-error {{is not a constant expressio…  in test()
585   { Copy c; c = Copy(to_lvalue_ref(std::move(C))); }  in test()
586 …{ Copy c; c = Copy(to_lvalue_ref(std::move(Copy(&f_eval)))); }// expected-error {{is not a constan…  in test()
591 …{ Copy* c; c = new Copy(to_lvalue_ref(Copy(&f_eval))); }// expected-error {{is not a constant expr…  in test()
592   { Copy* c; c = new Copy(to_lvalue_ref(std::move(C))); }  in test()
593 …{ Copy* c; c = new Copy(to_lvalue_ref(std::move(Copy(&f_eval)))); }// expected-error {{is not a co…  in test()