1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17 10 11 // common_view() requires default_initializable<V> = default; 12 13 #include <ranges> 14 15 #include <cassert> 16 #include <concepts> 17 18 #include "test_iterators.h" 19 #include "types.h" 20 main(int,char **)21int main(int, char**) { 22 static_assert(!std::default_initializable<std::ranges::common_view<MoveOnlyView>>); 23 static_assert( std::default_initializable<std::ranges::common_view<DefaultConstructibleView>>); 24 25 std::ranges::common_view<DefaultConstructibleView> common; 26 assert(common.begin() == nullptr); 27 assert(common.end() == nullptr); 28 29 return 0; 30 } 31