1 /* { dg-options "-std=gnu++0x -Wno-return-type" } */
3 typedef __SIZE_TYPE__ size_t;
4 namespace std __attribute__ ((__visibility__ ("default"))) {
6 void __throw_bad_function_call() __attribute__((__noreturn__));
8 inline void* operator new(std::size_t, void* __p) throw() {
14 bool operator==(const type_info& __arg) const { }
17 template<typename _Tp, _Tp __v> struct integral_constant { };
18 typedef integral_constant<bool, true> true_type;
19 template<typename _Res, typename... _ArgTypes>
20 struct _Maybe_unary_or_binary_function { };
21 class _Undefined_class;
23 void (_Undefined_class::*_M_member_pointer)();
27 return &_M_pod_data[0];
29 char _M_pod_data[sizeof(_Nocopy_types)];
31 enum _Manager_operation { __get_type_info, __get_functor_ptr, __clone_functor, __destroy_functor };
32 template<typename _Tp> struct _Simple_type_wrapper {
33 _Simple_type_wrapper(_Tp __value) : __value(__value) { }
36 template<typename _Signature> class function;
37 class _Function_base {
39 static const std::size_t _M_max_size = sizeof(_Nocopy_types);
40 static const std::size_t _M_max_align = __alignof__(_Nocopy_types);
41 template<typename _Functor> class _Base_manager {
42 static const bool __stored_locally = (sizeof(_Functor) <= _M_max_size && __alignof__(_Functor) <= _M_max_align && (_M_max_align % __alignof__(_Functor) == 0));
43 typedef integral_constant<bool, __stored_locally> _Local_storage;
45 static bool _M_manager(_Any_data& __dest, const _Any_data& __source, _Manager_operation __op) { }
46 static void _M_init_functor(_Any_data& __functor, const _Functor& __f) {
47 _M_init_functor(__functor, __f, _Local_storage());
49 template<typename _Class, typename _Tp> static bool _M_not_empty_function(_Tp _Class::* const& __mp) {
52 static void _M_init_functor(_Any_data& __functor, const _Functor& __f, true_type) {
53 new (__functor._M_access()) _Functor(__f);
57 if (_M_manager) _M_manager(_M_functor, _M_functor, __destroy_functor);
59 bool _M_empty() const {
62 typedef bool (*_Manager_type)(_Any_data&, const _Any_data&, _Manager_operation);
64 _Manager_type _M_manager;
66 template<typename _Signature, typename _Functor> class _Function_handler;
67 template<typename _Class, typename _Member, typename _Res, typename... _ArgTypes> class _Function_handler<_Res(_ArgTypes...), _Member _Class::*> : public _Function_handler<void(_ArgTypes...), _Member _Class::*> {
69 static _Res _M_invoke(const _Any_data& __functor, _ArgTypes... __args) { }
71 template<typename _Class, typename _Member, typename... _ArgTypes> class _Function_handler<void(_ArgTypes...), _Member _Class::*> : public _Function_base::_Base_manager< _Simple_type_wrapper< _Member _Class::* > > { };
72 template<typename _Res, typename... _ArgTypes> class function<_Res(_ArgTypes...)> : public _Maybe_unary_or_binary_function<_Res, _ArgTypes...>, private _Function_base {
73 typedef _Res _Signature_type(_ArgTypes...);
76 template<typename _Functor> function(_Functor __f, _Useless = _Useless());
77 _Res operator()(_ArgTypes... __args) const;
78 const type_info& target_type() const;
79 typedef _Res (*_Invoker_type)(const _Any_data&, _ArgTypes...);
80 _Invoker_type _M_invoker;
82 template<typename _Res, typename... _ArgTypes> template<typename _Functor> function<_Res(_ArgTypes...)>:: function(_Functor __f, _Useless) : _Function_base() {
83 typedef _Function_handler<_Signature_type, _Functor> _My_handler;
84 if (_My_handler::_M_not_empty_function(__f)) {
85 _M_invoker = &_My_handler::_M_invoke;
86 _M_manager = &_My_handler::_M_manager;
87 _My_handler::_M_init_functor(_M_functor, __f);
90 template<typename _Res, typename... _ArgTypes> _Res function<_Res(_ArgTypes...)>:: operator()(_ArgTypes... __args) const {
92 __throw_bad_function_call();
94 return _M_invoker(_M_functor, __args...);
96 template<typename _Res, typename... _ArgTypes> const type_info& function<_Res(_ArgTypes...)>:: target_type() const {
98 _Any_data __typeinfo_result;
99 _M_manager(__typeinfo_result, _M_functor, __get_type_info);
108 using std::tr1::function;
110 function<int(X&)> frm(&X::bar);
112 typeid(int X::*) == frm.target_type();