1 // Copyright (C) 2016-2021 Free Software Foundation, Inc.
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 // PR libstdc++/69114
21
22 #include <tuple>
23
24 template<typename T>
25 struct Alloc
26 {
27 using value_type = T;
28
29 Alloc() = default;
30
31 template<typename U>
AllocAlloc32 Alloc(const Alloc<U>&) { }
33
34 T* allocate(std::size_t);
35 void deallocate(T*, std::size_t);
36
operator ==Alloc37 bool operator==(const Alloc&) const { return true; }
operator !=Alloc38 bool operator!=(const Alloc&) const { return false; }
39
40 void operator&() = delete;
41 };
42
43 void
test01()44 test01()
45 {
46 Alloc<int> a;
47 std::tuple<int> t(std::allocator_arg, a);
48 }
49