overaligned.pass.cpp (894B)
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 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 }