blob: 9c1871f1af4aecc1a5e4cf3adb2379a245073039 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// Copyright (C) 2017-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do compile { target c++11 } }
#include <memory>
// Non-type template param means pointer_traits::rebind can't be instantiated.
template<typename T, int = 0>
struct Pointer
{
using element_type = T;
Pointer(T* p = nullptr) : ptr(p) { }
T* ptr;
};
template<typename T>
struct Alloc
{
using value_type = T;
using pointer = Pointer<T>;
using const_pointer = Pointer<const T>;
using void_pointer = Pointer<void>;
using const_void_pointer = Pointer<const void>;
pointer allocate(std::size_t n)
{ return std::allocator<T>().allocate(n); }
void allocate(pointer p, std::size_t n)
{ return std::allocator<T>().deallocate(p, n); }
};
// The nested pointer types in Alloc should be found without attempting to
// instantiate pointer_traits::rebind (which would fail):
std::allocator_traits<Alloc<int>>::pointer p;
std::allocator_traits<Alloc<int>>::const_pointer cp;
std::allocator_traits<Alloc<int>>::void_pointer vp;
std::allocator_traits<Alloc<int>>::const_void_pointer cvp;
|
