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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
// { dg-options "-std=gnu++11" }
//
// Copyright (C) 2011-2015 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/>.
#include <tr2/type_traits>
#include <typeinfo>
#include <stdexcept>
struct A { };
struct B1 : virtual public A { };
struct B2 : virtual public A { };
struct C : public B1, public B2 { };
void test()
{
bool test __attribute__((unused)) = true;
// 1
{
typedef std::tr2::bases<A>::type tl;
static_assert(tl::empty::value, "error");
}
// 2
{
typedef std::tr2::bases<B1>::type tl1;
typedef std::tr2::bases<B2>::type tl2;
// Sanity check w/ runtime.
bool eq = typeid(tl1) == typeid(tl2);
if (!eq)
throw std::logic_error("typelist not equal");
// Sanity check.
static_assert(tl1::empty::value != std::true_type::value, "!empty");
static_assert(tl2::empty::value != std::true_type::value, "!empty");
typedef tl1::first::type tl1_first;
typedef tl1::rest::type tl1_rest;
typedef tl2::first::type tl2_first;
typedef tl2::rest::type tl2_rest;
eq = typeid(tl1_first) == typeid(tl2_first);
if (!eq)
throw std::logic_error("base not equal");
static_assert(tl1_rest::empty::value == std::true_type::value, "empty");
static_assert(tl2_rest::empty::value == std::true_type::value, "empty");
}
// 3
{
typedef std::tr2::bases<C>::type tl;
// Sanity check.
static_assert(tl::empty::value != std::true_type::value, "!empty");
typedef tl::first::type tl1_first;
typedef tl::rest::type tl2;
typedef tl2::first::type tl2_first;
typedef tl2::rest::type tl3;
typedef tl3::first::type tl3_first;
typedef tl3::rest::type tl4;
bool eq = typeid(tl1_first) == typeid(tl2_first);
if (eq)
throw std::logic_error("bases are not equal");
eq = typeid(tl2_first) == typeid(tl3_first);
if (eq)
throw std::logic_error("bases are not equal");
static_assert(tl4::empty::value == std::true_type::value, "empty");
}
}
int main()
{
test();
return 0;
}
|
