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 // iota_view() requires default_initializable<W> = default; 12 13 #include <ranges> 14 #include <cassert> 15 16 #include "test_macros.h" 17 #include "types.h" 18 test()19constexpr bool test() { 20 { 21 std::ranges::iota_view<Int42<DefaultTo42>> io; 22 assert((*io.begin()).value_ == 42); 23 } 24 25 return true; 26 } 27 main(int,char **)28int main(int, char**) { 29 test(); 30 static_assert(test()); 31 32 static_assert(!std::default_initializable<Int42<ValueCtor>>); 33 static_assert( std::default_initializable<Int42<DefaultTo42>>); 34 35 return 0; 36 } 37