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 // <memory> 10 11 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TEMPORARY_BUFFER 12 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS 13 14 // template <class T> 15 // pair<T*, ptrdiff_t> 16 // get_temporary_buffer(ptrdiff_t n); 17 // 18 // template <class T> 19 // void 20 // return_temporary_buffer(T* p); 21 22 #include <cassert> 23 #include <cstddef> 24 #include <memory> 25 #include <utility> 26 27 int main(int, char**) 28 { 29 std::pair<int*, std::ptrdiff_t> ip = std::get_temporary_buffer<int>(5); 30 assert(ip.first); 31 assert(ip.second == 5); 32 std::return_temporary_buffer(ip.first); 33 34 return 0; 35 } 36