1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <iterator> 11 12 // class istream_iterator 13 14 // istream_iterator(const istream_iterator& x); 15 // C++17 says: If is_trivially_copy_constructible_v<T> is true, then 16 // this constructor is a trivial copy constructor. 17 18 #include <iterator> 19 #include <sstream> 20 #include <cassert> 21 22 #include "test_macros.h" 23 24 int main() 25 { 26 { 27 std::istream_iterator<int> io; 28 std::istream_iterator<int> i = io; 29 assert(i == std::istream_iterator<int>()); 30 } 31 { 32 std::istringstream inf(" 1 23"); 33 std::istream_iterator<int> io(inf); 34 std::istream_iterator<int> i = io; 35 assert(i != std::istream_iterator<int>()); 36 int j = 0; 37 j = *i; 38 assert(j == 1); 39 } 40 } 41
