blob: f04430e1147b70fec575368a6f7afce3e534711e (
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// Copyright (C) 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-options "-O2" }
// { dg-do compile { target c++11 } }
#include <cstdlib>
#include <vector>
template<class T>
struct Alloc : public std::allocator<T>
{
template<class U>
struct rebind { typedef Alloc<U> other; };
Alloc() : std::allocator<T>() {}
template<class U>
Alloc(const Alloc<U>& other) : std::allocator<T>(other) {}
T* allocate(std::size_t num, const void* = 0)
{
std::size_t size = num * sizeof(T);
void *result = std::malloc(size);
if(size>16 && (std::size_t(result) & 15)!=0) {
std::free(result);
return 0;
}
return static_cast<T*>( result );
}
void deallocate(T* p, std::size_t) { std::free(p); }
};
unsigned f(std::vector<int, Alloc<int> >& v)
{
v.push_back(1);
return v.size();
}
template<class T>
struct Alloc2 : public Alloc<T>
{
template<class U>
struct rebind { typedef Alloc2<U> other; };
Alloc2() : Alloc<T>() {}
template<class U>
Alloc2(const Alloc2<U>& other) : Alloc<T>(other) {}
std::size_t max_size() const { return std::size_t(-1) / sizeof(T); }
};
unsigned g(std::vector<int, Alloc2<int> >& v)
{
v.push_back(1);
return v.size();
}
|
