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 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_NODISCARD_EXT 12 13 // Check that <bit> functions aren't marked [[nodiscard]] when 14 // _LIBCPP_DISABLE_NODISCARD_EXT is defined 15 16 #include <bit> 17 18 #include "test_macros.h" 19 func()20void func() { 21 std::bit_cast<unsigned int>(42); 22 std::bit_ceil(0u); 23 std::bit_floor(0u); 24 std::bit_width(0u); 25 #if TEST_STD_VER >= 23 26 std::byteswap(0u); 27 #endif 28 std::countl_zero(0u); 29 std::countl_one(0u); 30 std::countr_zero(0u); 31 std::countr_one(0u); 32 std::has_single_bit(0u); 33 std::popcount(0u); 34 } 35