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src/hotspot/share/metaprogramming/dependentAlwaysFalse.hpp
36 строк
2 KB
Kim Barrett
8374623: Move DependentAlwaysFalse variable template to its own file
07 янв 2026, 13:06
07 янв 2026, 13:06
2074b97
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/* * Copyright (c) 2025, 2026, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_METAPROGRAMMING_DEPENDENTALWAYSFALSE_HPP #define SHARE_METAPROGRAMMING_DEPENDENTALWAYSFALSE_HPP // This provides a workaround for static_assert(false) in discarded or // otherwise uninstantiated places. Instead use // static_assert(DependentAlwaysFalse<T>, "...") // See http://wg21.link/p2593r1. Some, but not all, compiler versions we're // using have implemented that change as a DR: // https://cplusplus.github.io/CWG/issues/2518.html template<typename T> inline constexpr bool DependentAlwaysFalse = false; #endif // SHARE_METAPROGRAMMING_DEPENDENTALWAYSFALSE_HPP