blob: e6e9fc6eda9277b47ac2b6923b3ed5481e1c8456 (
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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
// { dg-do run }
#include <cassert>
struct A
{
double a;
double b;
};
struct B
{
A a;
};
struct C
: public A { };
struct D
{
D& operator=(const D&) throw() { return *this; }
};
struct E
{
E& operator=(const E&) throw(int) { return *this; }
};
struct E1
{
E1& operator=(const E1&) throw(int) { throw int(); return *this; }
};
struct F
{
F() throw(int) { }
};
struct G
{
G() throw(int) { throw int(); }
};
struct H
{
H& operator=(H&) throw(int) { return *this; }
};
struct H1
{
H1& operator=(H1&) throw(int) { throw int(); return *this; }
};
struct I
{
I& operator=(I&) throw(int) { return *this; }
I& operator=(const I&) throw() { return *this; }
};
struct I1
{
I1& operator=(I1&) throw(int) { throw int(); return *this; }
I1& operator=(const I1&) throw() { return *this; }
};
struct J
{
J& operator=(J&) throw() { return *this; }
J& operator=(const J&) throw() { return *this; }
J& operator=(volatile J&) throw() { return *this; }
J& operator=(const volatile J&) throw() { return *this; }
};
struct K
{
K& operator=(K&) throw() { return *this; }
};
struct L
{
L& operator=(const L&) throw() { return *this; }
};
template<typename T>
bool
f()
{ return __has_nothrow_assign(T); }
template<typename T>
class My
{
public:
bool
f()
{ return !!__has_nothrow_assign(T); }
};
template<typename T>
class My2
{
public:
static const bool trait = __has_nothrow_assign(T);
};
template<typename T>
const bool My2<T>::trait;
template<typename T, bool b = __has_nothrow_assign(T)>
struct My3_help
{ static const bool trait = b; };
template<typename T, bool b>
const bool My3_help<T, b>::trait;
template<typename T>
class My3
{
public:
bool
f()
{ return My3_help<T>::trait; }
};
#define PTEST(T) (__has_nothrow_assign(T) && f<T>() \
&& My<T>().f() && My2<T>::trait && My3<T>().f())
#define NTEST(T) (!__has_nothrow_assign(T) && !f<T>() \
&& !My<T>().f() && !My2<T>::trait && !My3<T>().f())
int main()
{
assert (PTEST (int));
assert (NTEST (int (int)));
assert (NTEST (void));
assert (PTEST (A));
assert (PTEST (B));
assert (PTEST (C));
assert (PTEST (C[]));
assert (PTEST (D));
assert (NTEST (E));
assert (NTEST (E1));
assert (PTEST (F));
assert (PTEST (G));
assert (NTEST (H));
assert (NTEST (H1));
assert (NTEST (I));
assert (NTEST (I1));
assert (PTEST (J));
assert (NTEST (const K));
assert (NTEST (const L));
return 0;
}
|
