diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/cpp1y/var-templ44.C')
-rw-r--r-- | gcc/testsuite/g++.dg/cpp1y/var-templ44.C | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp1y/var-templ44.C b/gcc/testsuite/g++.dg/cpp1y/var-templ44.C new file mode 100644 index 0000000000..2fc21a5063 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp1y/var-templ44.C @@ -0,0 +1,29 @@ +// PR c++/67161 +// { dg-do compile { target c++14 } } + +template <typename _Tp> struct integral_constant { + static constexpr _Tp value = 0; +}; +template <bool, typename, typename> struct conditional; +template <typename...> struct __or_; +template <typename _B1, typename _B2> +struct __or_<_B1, _B2> : conditional<1, _B1, _B2>::type {}; +template <typename...> struct __and_; +template <typename> struct __not_ : integral_constant<bool> {}; +template <typename> struct __is_void_helper : integral_constant<bool> {}; +template <typename> struct is_void : __is_void_helper<int> {}; +template <bool, typename _Iftrue, typename> struct conditional { + typedef _Iftrue type; +}; +template <bool _Cond, typename _Iftrue, typename _Iffalse> +using conditional_t = typename conditional<_Cond, _Iftrue, _Iffalse>::type; +template <typename...> using common_type_t = int; +template <typename, int> struct array {}; +template <typename _Tp> constexpr int is_void_v = is_void<_Tp>::value; +template <typename _Dest = void, typename... _Types> +constexpr auto make_array() + -> array<conditional_t<is_void_v<_Dest>, common_type_t<>, _Dest>, + sizeof...(_Types)> { + static_assert(__or_<__not_<is_void<_Dest>>, __and_<>>::value, ""); // { dg-error "static assert" } +} +auto d = make_array(); |