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Diffstat (limited to 'gcc/testsuite/g++.dg/torture/pr30252.C')
| -rw-r--r-- | gcc/testsuite/g++.dg/torture/pr30252.C | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/torture/pr30252.C b/gcc/testsuite/g++.dg/torture/pr30252.C new file mode 100644 index 000000000..aabf88f51 --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/pr30252.C @@ -0,0 +1,226 @@ +/* { dg-do run } */ +/* { dg-options "-fstrict-aliasing" } */ + +extern "C" void abort (void); +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_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 + { + }; + template <class T_functor> + struct functor_trait<T_functor,true> + { + typedef typename T_functor::result_type result_type; + typedef T_functor functor_type; + }; + template <class T_arg1, class T_return> + class pointer_functor1 : public functor_base + { + typedef T_return (*function_type)(T_arg1); + function_type func_ptr_; + public: + typedef T_return result_type; + explicit pointer_functor1(function_type _A_func): func_ptr_(_A_func) {} + T_return operator()(typename type_trait<T_arg1>::take _A_a1) const + { return func_ptr_(_A_a1); } + }; + template <class T_arg1, class T_return> + inline pointer_functor1<T_arg1, T_return> + ptr_fun1(T_return (*_A_func)(T_arg1)) + { return pointer_functor1<T_arg1, T_return>(_A_func); } + struct adaptor_base : public functor_base {}; + template <class T_functor, + class T_arg1=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> + struct deduce_result_type + { typedef typename sigc::deduce_result_type<T_functor, T_arg1>::type type; }; + typedef typename functor_trait<T_functor>::result_type result_type; + result_type + operator()() const; + template <class T_arg1> + typename deduce_result_type<T_arg1>::type + operator()(T_arg1 _A_arg1) const + { return functor_(_A_arg1); } + explicit adaptor_functor(const T_functor& _A_functor) + : functor_(_A_functor) + {} + mutable T_functor functor_; + }; + template <class T_functor> + typename adaptor_functor<T_functor>::result_type + adaptor_functor<T_functor>::operator()() const + { return 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 reference_wrapper + { + }; + 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() + { return visited_; } + T_type visited_; + }; + template <class T_wrapped> + class bound_argument< reference_wrapper<T_wrapped> > + { + }; + template <int I_location, class T_functor, class T_type1=nil> + struct bind_functor; + template <class T_functor, class T_type1> + struct bind_functor<-1, T_functor, T_type1> : public adapts<T_functor> + { + typedef typename adapts<T_functor>::adaptor_type adaptor_type; + typedef typename adaptor_type::result_type result_type; + result_type + operator()() + { + return this->functor_.template operator()<typename type_trait<typename unwrap_reference<T_type1>::type>::pass> (bound1_.invoke()); + } + bind_functor(typename type_trait<T_functor>::take _A_func, typename type_trait<T_type1>::take _A_bound1) + : adapts<T_functor>(_A_func), bound1_(_A_bound1) + {} + bound_argument<T_type1> bound1_; + }; + template <class T_type1, class T_functor> + inline bind_functor<-1, T_functor, + T_type1> + bind(const T_functor& _A_func, T_type1 _A_b1) + { return bind_functor<-1, T_functor, + T_type1> + (_A_func, _A_b1); + } + namespace internal { + struct slot_rep; + typedef void* (*hook)(slot_rep *); + struct slot_rep + { + hook call_; + }; + } + class slot_base : public functor_base + { + public: + typedef internal::slot_rep rep_type; + explicit slot_base(rep_type* rep) + : rep_(rep) + { + } + mutable rep_type *rep_; + }; + namespace internal { + template <class T_functor> + struct typed_slot_rep : public slot_rep + { + typedef typename adaptor_trait<T_functor>::adaptor_type adaptor_type; + adaptor_type functor_; + inline typed_slot_rep(const T_functor& functor) + : functor_(functor) + { + } + }; + template<class T_functor> + struct slot_call0 + { + static void *call_it(slot_rep* rep) + { + typedef typed_slot_rep<T_functor> typed_slot; + typed_slot *typed_rep = static_cast<typed_slot*>(rep); + return (typed_rep->functor_)(); + } + static hook address() + { + return &call_it; + } + }; + } + + class slot0 : public slot_base + { + public: + typedef void * (*call_type)(rep_type*); + inline void *operator()() const + { + return slot_base::rep_->call_ (slot_base::rep_); + } + template <class T_functor> + slot0(const T_functor& _A_func) + : slot_base(new internal::typed_slot_rep<T_functor>(_A_func)) + { + slot_base::rep_->call_ = internal::slot_call0<T_functor>::address(); + } + }; +} +struct A +{ + static void *foo (void *p) { return p; } + typedef sigc::slot0 C; + C bar(); +}; +A::C A::bar () +{ + return sigc::bind (sigc::ptr_fun1 (&A::foo), (void*)0); +} +int main (void) +{ + A a; + if (a.bar ()() != 0) + abort (); +} |