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/* { dg-do compile } */
/* { dg-options "-O2 -Wno-return-type" } */
namespace sigc {
template <class T_type> struct type_trait {
typedef T_type& pass;
typedef const T_type& take;
typedef T_type* pointer;
};
template <class T_type> struct type_trait<T_type&> {
typedef T_type& pass;
};
template<> struct type_trait<void> {
typedef void pass;
};
template <class T_base, class T_derived> struct is_base_and_derived {
struct big {
char memory[64];
};
static big is_base_class_(...);
static char is_base_class_(typename type_trait<T_base>::pointer);
static const bool value = sizeof(is_base_class_(reinterpret_cast<typename type_trait<T_derived>::pointer>(0))) == sizeof(char);
};
struct nil;
struct functor_base {
};
template <class T_functor, bool I_derives_functor_base=is_base_and_derived<functor_base,T_functor>::value> struct functor_trait {
typedef typename T_functor::result_type result_type;
typedef T_functor functor_type;
};
struct adaptor_base : public functor_base {
};
template <class T_functor, class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void, bool I_derives_adaptor_base=is_base_and_derived<adaptor_base,T_functor>::value> struct deduce_result_type {
typedef typename functor_trait<T_functor>::result_type type;
};
template <class T_functor> struct adaptor_functor
: public adaptor_base {
template <class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void> struct deduce_result_type {
typedef typename sigc::deduce_result_type<T_functor, T_arg1,T_arg2,T_arg3,T_arg4,T_arg5,T_arg6,T_arg7>::type type;
};
typedef typename functor_trait<T_functor>::result_type result_type;
template <class T_arg1,class T_arg2> typename deduce_result_type<T_arg1,T_arg2>::type operator()(T_arg1 _A_arg1,T_arg2 _A_arg2) const {
return functor_(_A_arg1,_A_arg2);
}
explicit adaptor_functor(const T_functor& _A_functor) : functor_(_A_functor) {
}
mutable T_functor functor_;
};
template <class T_functor, bool I_isadaptor = is_base_and_derived<adaptor_base, T_functor>::value> struct adaptor_trait;
template <class T_functor> struct adaptor_trait<T_functor, true> {
typedef T_functor adaptor_type;
};
template <class T_functor> struct adaptor_trait<T_functor, false> {
typedef typename functor_trait<T_functor>::functor_type functor_type;
typedef adaptor_functor<functor_type> adaptor_type;
};
template <class T_functor> struct adapts
: public adaptor_base {
typedef typename adaptor_trait<T_functor>::adaptor_type adaptor_type;
explicit adapts(const T_functor& _A_functor) : functor_(_A_functor) {
}
mutable adaptor_type functor_;
};
template <class T_type> struct unwrap_reference {
typedef T_type type;
};
template <class T_type> class bound_argument {
public:
bound_argument(const T_type& _A_argument) : visited_(_A_argument) {
}
inline T_type& invoke() {
}
T_type visited_;
};
template <int I_location, class T_functor, class T_type1=nil,class T_type2=nil,class T_type3=nil,class T_type4=nil,class T_type5=nil,class T_type6=nil,class T_type7=nil> struct bind_functor;
template <class T_functor, class T_bound> struct bind_functor<0, T_functor, T_bound, nil,nil,nil,nil,nil,nil> : public adapts<T_functor> {
typedef typename adapts<T_functor>::adaptor_type adaptor_type;
template <class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void> struct deduce_result_type {
typedef typename adaptor_type::template deduce_result_type<typename type_trait<typename unwrap_reference<T_bound>::type>::pass, typename type_trait<T_arg1>::pass, typename type_trait<T_arg2>::pass, typename type_trait<T_arg3>::pass, typename type_trait<T_arg4>::pass, typename type_trait<T_arg5>::pass, typename type_trait<T_arg6>::pass>::type type;
};
typedef typename adaptor_type::result_type result_type;
result_type operator()() {
return this->functor_.template operator()<typename type_trait<typename unwrap_reference<T_bound>::type>::pass> (bound_.invoke());
}
template <class T_arg1> typename deduce_result_type<T_arg1>::type operator()(T_arg1 _A_arg1) {
return this->functor_.template operator()<typename type_trait<typename unwrap_reference<T_bound>::type>::pass, typename type_trait<T_arg1>::pass> (bound_.invoke(), _A_arg1);
}
bind_functor(typename type_trait<T_functor>::take _A_func, typename type_trait<T_bound>::take _A_bound) : adapts<T_functor>(_A_func), bound_(_A_bound) {
}
bound_argument<T_bound> bound_;
};
template <int I_location, class T_bound1, class T_functor> inline bind_functor<I_location, T_functor, T_bound1> bind(const T_functor& _A_func, T_bound1 _A_b1) {
return bind_functor<I_location, T_functor, T_bound1>(_A_func, _A_b1);
};
}
struct foo {
typedef int result_type;
int operator()(int i, int j);
};
int main() {
sigc::bind<0>(sigc::bind<0>(foo(),7),8)();
}
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