Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/pr52744.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// PR c++/52744 // { dg-do compile { target c++11 } } struct T { int a; void b(){} int c(int) { return 1; } }; template<typename CT, CT> struct member_helper; template<typename FT, FT(T::*mem)> struct member_helper<FT(T::*), mem> { static const char* worker() { return "for members"; } }; template<typename Return, typename... Args, Return(T::*fun)(Args...)> struct member_helper<Return(T::*)(Args...), fun> { static const char* worker() { return "for member functions returning non void"; } }; template<typename... Args, void(T::*fun)(Args...)> struct member_helper<void(T::*)(Args...), fun> { static const char* worker() { return "for member functions returning void"; } }; void member_test() { member_helper<decltype(&T::a), &T::a>::worker(); member_helper<decltype(&T::b), &T::b>::worker(); member_helper<decltype(&T::c), &T::c>::worker(); } typedef void lua_State; template<typename T, T> class function_helper { static_assert(sizeof(T) != sizeof(T), "Error: function_helper works with functions (duh)"); }; template<typename Return, typename... Args, Return(*func)(Args...)> struct function_helper<Return(*)(Args...), func> { static int wrapper(lua_State* l) { return 1; } }; template<typename... Args, void(*func)(Args...)> struct function_helper<void(*)(Args...), func> { static int wrapper(lua_State* l) { return 0; } }; int ciao(int){ return 0; } void ciao2(int){} void function_test() { function_helper<decltype(&ciao), &ciao>::wrapper(0); function_helper<decltype(&ciao2), &ciao2>::wrapper(0); }