1*0fca6ea1SDimitry Andric //===----------------------------------------------------------------------===// 2*0fca6ea1SDimitry Andric // 3*0fca6ea1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0fca6ea1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0fca6ea1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0fca6ea1SDimitry Andric // 7*0fca6ea1SDimitry Andric //===----------------------------------------------------------------------===// 8*0fca6ea1SDimitry Andric 9*0fca6ea1SDimitry Andric #ifndef _LIBCPP___TUPLE_IGNORE_H 10*0fca6ea1SDimitry Andric #define _LIBCPP___TUPLE_IGNORE_H 11*0fca6ea1SDimitry Andric 12*0fca6ea1SDimitry Andric #include <__config> 13*0fca6ea1SDimitry Andric 14*0fca6ea1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15*0fca6ea1SDimitry Andric # pragma GCC system_header 16*0fca6ea1SDimitry Andric #endif 17*0fca6ea1SDimitry Andric 18*0fca6ea1SDimitry Andric #ifndef _LIBCPP_CXX03_LANG 19*0fca6ea1SDimitry Andric 20*0fca6ea1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21*0fca6ea1SDimitry Andric 22*0fca6ea1SDimitry Andric struct __ignore_type { 23*0fca6ea1SDimitry Andric template <class _Tp> 24*0fca6ea1SDimitry Andric _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const __ignore_type& operator=(const _Tp&) const noexcept { 25*0fca6ea1SDimitry Andric return *this; 26*0fca6ea1SDimitry Andric } 27*0fca6ea1SDimitry Andric }; 28*0fca6ea1SDimitry Andric 29*0fca6ea1SDimitry Andric # if _LIBCPP_STD_VER >= 17 30*0fca6ea1SDimitry Andric inline constexpr __ignore_type ignore; 31*0fca6ea1SDimitry Andric # else 32*0fca6ea1SDimitry Andric constexpr __ignore_type ignore; 33*0fca6ea1SDimitry Andric # endif 34*0fca6ea1SDimitry Andric 35*0fca6ea1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 36*0fca6ea1SDimitry Andric 37*0fca6ea1SDimitry Andric #endif // _LIBCPP_CXX03_LANG 38*0fca6ea1SDimitry Andric 39*0fca6ea1SDimitry Andric #endif // _LIBCPP___TUPLE_IGNORE_H 40