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83ffe9cd | 1 | // Copyright (C) 2018-2023 Free Software Foundation, Inc. |
422a9f77 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-options "-O2" } | |
19 | // { dg-do compile { target c++11 } } | |
20 | ||
21 | #include <cstdlib> | |
22 | #include <vector> | |
23 | ||
24 | template<class T> | |
25 | struct Alloc : public std::allocator<T> | |
26 | { | |
27 | template<class U> | |
28 | struct rebind { typedef Alloc<U> other; }; | |
29 | ||
30 | Alloc() : std::allocator<T>() {} | |
31 | ||
32 | template<class U> | |
33 | Alloc(const Alloc<U>& other) : std::allocator<T>(other) {} | |
34 | ||
35 | T* allocate(std::size_t num, const void* = 0) | |
36 | { | |
37 | std::size_t size = num * sizeof(T); | |
38 | void *result = std::malloc(size); | |
39 | if(size>16 && (std::size_t(result) & 15)!=0) { | |
40 | std::free(result); | |
41 | return 0; | |
42 | } | |
43 | return static_cast<T*>( result ); | |
44 | } | |
45 | ||
46 | void deallocate(T* p, std::size_t) { std::free(p); } | |
47 | }; | |
48 | ||
49 | unsigned f(std::vector<int, Alloc<int> >& v) | |
50 | { | |
51 | v.push_back(1); | |
52 | return v.size(); | |
53 | } | |
54 | ||
55 | template<class T> | |
56 | struct Alloc2 : public Alloc<T> | |
57 | { | |
58 | template<class U> | |
59 | struct rebind { typedef Alloc2<U> other; }; | |
60 | ||
61 | Alloc2() : Alloc<T>() {} | |
62 | ||
63 | template<class U> | |
64 | Alloc2(const Alloc2<U>& other) : Alloc<T>(other) {} | |
65 | ||
66 | std::size_t max_size() const { return std::size_t(-1) / sizeof(T); } | |
67 | }; | |
68 | ||
69 | unsigned g(std::vector<int, Alloc2<int> >& v) | |
70 | { | |
71 | v.push_back(1); | |
72 | return v.size(); | |
73 | } |