diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/g++.dg/cpp1y/pr59867.C')
-rw-r--r-- | gcc-4.9/gcc/testsuite/g++.dg/cpp1y/pr59867.C | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp1y/pr59867.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp1y/pr59867.C new file mode 100644 index 000000000..91d025964 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp1y/pr59867.C @@ -0,0 +1,52 @@ +// PR c++/59867 +// { dg-do compile { target c++1y } } + +#include <iostream> +using namespace std; + +// constant +template<typename T, T x> + struct meta_value + { + typedef meta_value type; + typedef T value_type; + static const T value = x; + }; + +// array +template<typename T, T... data> + struct meta_array + { + typedef meta_array type; + typedef T item_type; + }; + +// static array -> runtime array conversion utility +template<typename T> + struct array_gen; + +template<typename T, T... xs> + struct array_gen<meta_array<T, xs...>> + { + static const T value[sizeof...(xs)]; + }; + +template<typename T, T... xs> + const T + array_gen<meta_array<T, xs...>>::value[sizeof...(xs)] = {xs...}; + +// static string +template<typename T, T... xs> + constexpr meta_array<T, xs...> + operator""_s() + { + static_assert(sizeof...(xs) == 3, "What's wrong with you?"); + return meta_array<T, xs...>(); + } + +int +main() +{ + auto a = "123"_s; + const char (& xs)[3] = array_gen<decltype("123"_s)>::value; +} |