| // { dg-do compile { target c++17 } } |
| |
| // Bug 110512 - C++20 random access iterators run sequentially with PSTL |
| |
| #include <algorithm> |
| #include <execution> |
| #include <ranges> |
| #include <testsuite_iterators.h> |
| |
| using InputIter = __gnu_test::input_iterator_wrapper<int>; |
| using FwdIter = __gnu_test::forward_iterator_wrapper<long>; |
| using RAIter = __gnu_test::random_access_iterator_wrapper<float>; |
| |
| template<typename... Iter> |
| constexpr bool all_random_access |
| = __pstl::__internal::__are_random_access_iterators<Iter...>::value; |
| |
| using __pstl::__internal::__are_random_access_iterators; |
| static_assert( all_random_access<RAIter> ); |
| static_assert( all_random_access<int*, RAIter, const long*> ); |
| static_assert( ! all_random_access<RAIter, FwdIter> ); |
| static_assert( ! all_random_access<FwdIter, InputIter, RAIter> ); |
| |
| #if __cpp_lib_ranges |
| using IotaIter = std::ranges::iterator_t<std::ranges::iota_view<int, int>>; |
| static_assert( std::random_access_iterator<IotaIter> ); |
| static_assert( all_random_access<IotaIter> ); |
| static_assert( all_random_access<IotaIter, RAIter> ); |
| static_assert( all_random_access<RAIter, IotaIter> ); |
| static_assert( ! all_random_access<RAIter, IotaIter, FwdIter> ); |
| #endif |
