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 10 11 // Aligned allocations are not supported on macOS < 10.13 12 // Note: use 'unsupported' instead of 'xfail' to ensure 13 // we won't pass prior to c++17. 14 // UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} 15 16 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS 17 18 // <memory> 19 20 // template <class T> 21 // pair<T*, ptrdiff_t> 22 // get_temporary_buffer(ptrdiff_t n); 23 // 24 // template <class T> 25 // void 26 // return_temporary_buffer(T* p); 27 28 #include <memory> 29 #include <cassert> 30 31 #include "test_macros.h" 32 33 struct alignas(32) A { 34 int field; 35 }; 36 main(int,char **)37int main(int, char**) 38 { 39 std::pair<A*, std::ptrdiff_t> ip = std::get_temporary_buffer<A>(5); 40 assert(!(ip.first == nullptr) ^ (ip.second == 0)); 41 assert(reinterpret_cast<uintptr_t>(ip.first) % alignof(A) == 0); 42 std::return_temporary_buffer(ip.first); 43 44 return 0; 45 } 46