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: no-localization 10 // UNSUPPORTED: c++03, c++11, c++14, c++17 11 // XFAIL: msvc && (clang-16 || clang-17) 12 13 // Test the libc++ extension that the value stored in `std::ranges::istream_view` has been marked 14 // as _LIBCPP_NO_UNIQUE_ADDRESS 15 16 #include <istream> 17 #include <ranges> 18 19 struct Empty { operator >>(std::istream & i,Empty const &)20 friend std::istream& operator>>(std::istream& i, Empty const&) { return i; } 21 }; 22 23 static_assert(sizeof(std::ranges::istream_view<Empty>) == sizeof(void*)); 24 25