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 
17 // <memory>
18 
19 // template <class T>
20 //   pair<T*, ptrdiff_t>
21 //   get_temporary_buffer(ptrdiff_t n);
22 //
23 // template <class T>
24 //   void
25 //   return_temporary_buffer(T* p);
26 
27 #include <memory>
28 #include <cassert>
29 
30 #include "test_macros.h"
31 
32 struct alignas(32) A {
33     int field;
34 };
35 
36 int main(int, char**)
37 {
38     std::pair<A*, std::ptrdiff_t> ip = std::get_temporary_buffer<A>(5);
39     assert(!(ip.first == nullptr) ^ (ip.second == 0));
40     assert(reinterpret_cast<uintptr_t>(ip.first) % alignof(A) == 0);
41     std::return_temporary_buffer(ip.first);
42 
43   return 0;
44 }
45