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57 lines
1.4 KiB
Plaintext
57 lines
1.4 KiB
Plaintext
/* mbed Microcontroller Library
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* Copyright (c) 2019 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MSTD_NEW_
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#define MSTD_NEW_
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/* <mstd_new>
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*
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* - includes toolchain's <new>
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* - For all toolchains, C++17 backports:
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* - mstd::launder
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*/
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#include <new>
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#if __cpp_lib_launder < 201606
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#include <type_traits>
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#endif
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namespace mstd
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{
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using std::nothrow_t;
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using std::nothrow;
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using std::new_handler;
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using std::set_new_handler;
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#if __cpp_lib_launder >= 201606
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using std::launder;
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#else
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template <typename T>
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constexpr T *launder(T *p) noexcept
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{
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static_assert(!std::is_function<T>::value && !std::is_void<T>::value, "Can only launder complete object types");
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#if defined __clang__ || __GNUC__ >= 9
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return __builtin_launder(p);
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#else
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return p;
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#endif
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}
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#endif
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} // namespace mstd
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#endif // MSTD_NEW_
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