1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // UNSUPPORTED: c++98, c++03
11 
12 // <memory>
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 <memory>
23 #include <cassert>
24 
25 struct alignas(32) A {
26     int field;
27 };
28 
main()29 int main()
30 {
31     std::pair<A*, std::ptrdiff_t> ip = std::get_temporary_buffer<A>(5);
32     assert(!(ip.first == nullptr) ^ (ip.second == 0));
33     assert(reinterpret_cast<uintptr_t>(ip.first) % alignof(A) == 0);
34     std::return_temporary_buffer(ip.first);
35 }
36