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fbd26352 | 1 | // Copyright (C) 2017-2019 Free Software Foundation, Inc. |
df8805b4 | 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 | // Non-type template param means pointer_traits::rebind can't be instantiated. | |
23 | template<typename T, int = 0> | |
24 | struct Pointer | |
25 | { | |
26 | using element_type = T; | |
27 | Pointer(T* p = nullptr) : ptr(p) { } | |
28 | T* ptr; | |
29 | }; | |
30 | ||
31 | template<typename T> | |
32 | struct Alloc | |
33 | { | |
34 | using value_type = T; | |
35 | using pointer = Pointer<T>; | |
36 | using const_pointer = Pointer<const T>; | |
37 | using void_pointer = Pointer<void>; | |
38 | using const_void_pointer = Pointer<const void>; | |
39 | ||
40 | pointer allocate(std::size_t n) | |
41 | { return std::allocator<T>().allocate(n); } | |
42 | ||
43 | void allocate(pointer p, std::size_t n) | |
44 | { return std::allocator<T>().deallocate(p, n); } | |
45 | }; | |
46 | ||
47 | // The nested pointer types in Alloc should be found without attempting to | |
48 | // instantiate pointer_traits::rebind (which would fail): | |
49 | std::allocator_traits<Alloc<int>>::pointer p; | |
50 | std::allocator_traits<Alloc<int>>::const_pointer cp; | |
51 | std::allocator_traits<Alloc<int>>::void_pointer vp; | |
52 | std::allocator_traits<Alloc<int>>::const_void_pointer cvp; |