projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| a5544970 | 1 | // Copyright (C) 2017-2019 Free Software Foundation, Inc. |
| a3a1620b JW |
2 | // |
| 3 | // This file is part of the GNU ISO C++ Library. This library is free | |
| 4 | // software; you can redistribute it and/or modify it under the | |
| 5 | // terms of the GNU General Public License as published by the | |
| 6 | // Free Software Foundation; either version 3, or (at your option) | |
| 7 | // any later version. | |
| 8 | ||
| 9 | // This library is distributed in the hope that it will be useful, | |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | // GNU General Public License for more details. | |
| 13 | ||
| 14 | // You should have received a copy of the GNU General Public License along | |
| 15 | // with this library; see the file COPYING3. If not see | |
| 16 | // <http://www.gnu.org/licenses/>. | |
| 17 | ||
| 18 | // { dg-do compile { target c++11 } } | |
| 19 | ||
| 20 | #include <memory> | |
| 21 | ||
| 22 | using std::is_same; | |
| 23 | ||
| 24 | template<typename T, typename U> | |
| 25 | using Rebind = typename std::allocator_traits<T>::template rebind_alloc<U>; | |
| 26 | ||
| 27 | template<typename T> | |
| 28 | struct HasRebind { | |
| 29 | using value_type = T; | |
| 30 | template<typename U> struct rebind { using other = std::allocator<U>; }; | |
| 31 | }; | |
| 32 | ||
| 33 | static_assert(is_same<Rebind<HasRebind<int>, long>, | |
| 34 | std::allocator<long>>::value, | |
| 35 | "nested alias template is used"); | |
| 36 | ||
| 37 | template<typename T> | |
| 38 | struct NoRebind0 { | |
| 39 | using value_type = T; | |
| 40 | }; | |
| 41 | ||
| 42 | static_assert(is_same<Rebind<NoRebind0<int>, long>, | |
| 43 | NoRebind0<long>>::value, | |
| 44 | "first template argument is replaced"); | |
| 45 | ||
| 46 | template<typename T, typename> | |
| 47 | struct NoRebind1 { | |
| 48 | using value_type = T; | |
| 49 | }; | |
| 50 | ||
| 51 | static_assert(is_same<Rebind<NoRebind1<int, void>, long>, | |
| 52 | NoRebind1<long, void>>::value, | |
| 53 | "first template argument is replaced"); | |
| 54 | ||
| 55 | template<typename T, typename, typename> | |
| 56 | struct NoRebind2 { | |
| 57 | using value_type = T; | |
| 58 | }; | |
| 59 | ||
| 60 | static_assert(is_same<Rebind<NoRebind2<int, void, void>, long>, | |
| 61 | NoRebind2<long, void, void>>::value, | |
| 62 | "first template argument is replaced"); | |
| 63 | ||
| 64 | template<typename T, typename...> | |
| 65 | struct NoRebindN { | |
| 66 | using value_type = T; | |
| 67 | }; | |
| 68 | ||
| 69 | static_assert(is_same<Rebind<NoRebindN<int>, long>, | |
| 70 | NoRebindN<long>>::value, | |
| 71 | "first template argument is replaced"); | |
| 72 | static_assert(is_same<Rebind<NoRebindN<int, void>, long>, | |
| 73 | NoRebindN<long, void>>::value, | |
| 74 | "first template argument is replaced"); | |
| 75 | ||
| 76 | template<typename T, int = 0> | |
| 77 | struct CannotRebind { | |
| 78 | using value_type = T; | |
| 79 | }; | |
| 80 | // PR libstdc++/72792 specialization of allocator_traits is still well-formed: | |
| 81 | std::allocator_traits<CannotRebind<int>>::value_type v; |