Eric Fiselier | 257fd69 | 2016-05-07 01:04:55 +0000 | [diff] [blame] | 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 | // <experimental/memory_resource> |
| 13 | |
| 14 | // template <class T> class polymorphic_allocator |
| 15 | |
| 16 | // polymorphic_allocator<T>::polymorphic_allocator() noexcept |
| 17 | |
| 18 | #include <experimental/memory_resource> |
| 19 | #include <type_traits> |
| 20 | #include <cassert> |
| 21 | |
| 22 | #include "test_memory_resource.hpp" |
| 23 | |
| 24 | namespace ex = std::experimental::pmr; |
| 25 | |
| 26 | int main() |
| 27 | { |
| 28 | { |
| 29 | static_assert( |
| 30 | std::is_nothrow_default_constructible<ex::polymorphic_allocator<void>>::value |
| 31 | , "Must me nothrow default constructible" |
| 32 | ); |
| 33 | } |
| 34 | { |
| 35 | // test that the allocator gets its resource from get_default_resource |
| 36 | TestResource R1(42); |
| 37 | ex::set_default_resource(&R1); |
| 38 | |
| 39 | typedef ex::polymorphic_allocator<void> A; |
| 40 | A const a; |
| 41 | assert(a.resource() == &R1); |
| 42 | |
| 43 | ex::set_default_resource(nullptr); |
| 44 | A const a2; |
| 45 | assert(a.resource() == &R1); |
| 46 | assert(a2.resource() == ex::new_delete_resource()); |
| 47 | } |
| 48 | } |