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52066eae | 1 | // { dg-do run { target c++11 } } |
7cc9022f AA |
2 | // { dg-require-effective-target hosted } |
3 | ||
7aec2c63 PC |
4 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
5 | // | |
a945c346 | 6 | // Copyright (C) 2005-2024 Free Software Foundation, Inc. |
7aec2c63 PC |
7 | // |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | // | |
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | // | |
19 | // You should have received a copy of the GNU General Public License along | |
20 | // with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | // 20.7.15 polymorphic function object wrapper | |
24 | #include <functional> | |
25 | #include <testsuite_hooks.h> | |
26 | #include <testsuite_tr1.h> | |
27 | ||
4704f28e JW |
28 | template<typename T> |
29 | const T& | |
30 | as_const(T& t) | |
31 | { return t; } | |
32 | ||
33 | // Check that f's target is a reference_wrapper bound to obj. | |
34 | template<typename Function, typename T> | |
35 | bool | |
36 | wraps(Function& f, T& obj) | |
37 | { | |
38 | using ref_wrapper_type = std::reference_wrapper<T>; | |
39 | auto* p = f.template target<ref_wrapper_type>(); | |
40 | return std::addressof(p->get()) == std::addressof(obj); | |
41 | } | |
7aec2c63 | 42 | |
7aec2c63 PC |
43 | // Put reference_wrappers to member pointers |
44 | void test08() | |
45 | { | |
46 | using std::function; | |
47 | using std::ref; | |
48 | using std::cref; | |
4704f28e JW |
49 | using std::reference_wrapper; |
50 | using __gnu_test::X; | |
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51 | |
52 | int X::* X_bar = &X::bar; | |
53 | int (X::* X_foo)() = &X::foo; | |
54 | int (X::* X_foo_c)() const = &X::foo_c; | |
55 | int (X::* X_foo_v)() volatile = &X::foo_v; | |
56 | int (X::* X_foo_cv)() const volatile = &X::foo_cv; | |
57 | ||
58 | X x; | |
59 | x.bar = 17; | |
60 | ||
61 | function<int(X&)> frm(ref(X_bar)); | |
62 | VERIFY( frm ); | |
63 | VERIFY( frm(x) == 17 ); | |
b6b66006 | 64 | #if __cpp_rtti |
4704f28e | 65 | VERIFY( typeid(ref(X_bar)) == frm.target_type() ); |
b6b66006 | 66 | #endif |
4704f28e | 67 | VERIFY( wraps(frm, X_bar) ); |
7aec2c63 PC |
68 | |
69 | function<int(X&)> fr(ref(X_foo)); | |
70 | VERIFY( fr ); | |
71 | VERIFY( fr(x) == 1 ); | |
b6b66006 | 72 | #if __cpp_rtti |
4704f28e | 73 | VERIFY( typeid(ref(X_foo)) == fr.target_type() ); |
b6b66006 | 74 | #endif |
4704f28e | 75 | VERIFY( wraps(fr, X_foo) ); |
7aec2c63 PC |
76 | |
77 | function<int(const X&)> frc(ref(X_foo_c)); | |
78 | VERIFY( frc ); | |
79 | VERIFY( frc(x) == 2 ); | |
b6b66006 | 80 | #if __cpp_rtti |
4704f28e | 81 | VERIFY( typeid(ref(X_foo_c)) == frc.target_type() ); |
b6b66006 | 82 | #endif |
4704f28e | 83 | VERIFY( wraps(frc, X_foo_c) ); |
7aec2c63 PC |
84 | |
85 | function<int(volatile X&)> frv(ref(X_foo_v)); | |
86 | VERIFY( frv ); | |
87 | VERIFY( frv(x) == 3 ); | |
b6b66006 | 88 | #if __cpp_rtti |
4704f28e | 89 | VERIFY( typeid(ref(X_foo_v)) == frv.target_type() ); |
b6b66006 | 90 | #endif |
4704f28e | 91 | VERIFY( wraps(frv, X_foo_v) ); |
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92 | |
93 | function<int(const volatile X&)> frcv(ref(X_foo_cv)); | |
94 | VERIFY( frcv ); | |
95 | VERIFY( frcv(x) == 4 ); | |
b6b66006 | 96 | #if __cpp_rtti |
4704f28e | 97 | VERIFY( typeid(ref(X_foo_cv)) == frcv.target_type() ); |
b6b66006 | 98 | #endif |
4704f28e | 99 | VERIFY( wraps(frcv, X_foo_cv) ); |
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100 | |
101 | function<int(X*)> grm(ref(X_bar)); | |
102 | VERIFY( grm ); | |
103 | VERIFY( grm(&x) == 17 ); | |
b6b66006 | 104 | #if __cpp_rtti |
4704f28e | 105 | VERIFY( typeid(ref(X_bar)) == grm.target_type() ); |
b6b66006 | 106 | #endif |
4704f28e | 107 | VERIFY( wraps(grm, X_bar) ); |
7aec2c63 PC |
108 | |
109 | function<int(X*)> gr(ref(X_foo)); | |
110 | VERIFY( gr ); | |
111 | VERIFY( gr(&x) == 1 ); | |
b6b66006 | 112 | #if __cpp_rtti |
4704f28e | 113 | VERIFY( typeid(ref(X_foo)) == gr.target_type() ); |
b6b66006 | 114 | #endif |
4704f28e | 115 | VERIFY( wraps(gr, X_foo) ); |
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116 | |
117 | function<int(const X*)> grc(ref(X_foo_c)); | |
118 | VERIFY( grc ); | |
119 | VERIFY( grc(&x) == 2 ); | |
b6b66006 | 120 | #if __cpp_rtti |
4704f28e | 121 | VERIFY( typeid(ref(X_foo_c)) == grc.target_type() ); |
b6b66006 | 122 | #endif |
4704f28e | 123 | VERIFY( wraps(grc, X_foo_c) ); |
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124 | |
125 | function<int(volatile X*)> grv(ref(X_foo_v)); | |
126 | VERIFY( grv ); | |
127 | VERIFY( grv(&x) == 3 ); | |
b6b66006 | 128 | #if __cpp_rtti |
4704f28e | 129 | VERIFY( typeid(ref(X_foo_v)) == grv.target_type() ); |
b6b66006 | 130 | #endif |
4704f28e | 131 | VERIFY( wraps(grv, X_foo_v) ); |
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132 | |
133 | function<int(const volatile X*)> grcv(ref(X_foo_cv)); | |
134 | VERIFY( grcv ); | |
135 | VERIFY( grcv(&x) == 4 ); | |
b6b66006 | 136 | #if __cpp_rtti |
4704f28e | 137 | VERIFY( typeid(ref(X_foo_cv)) == grcv.target_type() ); |
b6b66006 | 138 | #endif |
4704f28e | 139 | VERIFY( wraps(grcv, X_foo_cv) ); |
7aec2c63 PC |
140 | |
141 | function<int(X&)> hrm(cref(X_bar)); | |
142 | VERIFY( hrm ); | |
143 | VERIFY( hrm(x) == 17 ); | |
b6b66006 | 144 | #if __cpp_rtti |
4704f28e | 145 | VERIFY( typeid(cref(X_bar)) == hrm.target_type() ); |
b6b66006 | 146 | #endif |
4704f28e | 147 | VERIFY( wraps(hrm, as_const(X_bar)) ); |
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148 | |
149 | function<int(X&)> hr(cref(X_foo)); | |
150 | VERIFY( hr ); | |
151 | VERIFY( hr(x) == 1 ); | |
b6b66006 | 152 | #if __cpp_rtti |
4704f28e | 153 | VERIFY( typeid(cref(X_foo)) == hr.target_type() ); |
b6b66006 | 154 | #endif |
4704f28e | 155 | VERIFY( wraps(hr, as_const(X_foo)) ); |
7aec2c63 PC |
156 | |
157 | function<int(const X&)> hrc(cref(X_foo_c)); | |
158 | VERIFY( hrc ); | |
159 | VERIFY( hrc(x) == 2 ); | |
b6b66006 | 160 | #if __cpp_rtti |
4704f28e | 161 | VERIFY( typeid(cref(X_foo_c)) == hrc.target_type() ); |
b6b66006 | 162 | #endif |
4704f28e | 163 | VERIFY( wraps(hrc, as_const(X_foo_c)) ); |
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164 | |
165 | function<int(volatile X&)> hrv(cref(X_foo_v)); | |
166 | VERIFY( hrv ); | |
167 | VERIFY( hrv(x) == 3 ); | |
b6b66006 | 168 | #if __cpp_rtti |
4704f28e | 169 | VERIFY( typeid(cref(X_foo_v)) == hrv.target_type() ); |
b6b66006 | 170 | #endif |
4704f28e | 171 | VERIFY( wraps(hrv, as_const(X_foo_v)) ); |
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172 | |
173 | function<int(const volatile X&)> hrcv(cref(X_foo_cv)); | |
174 | VERIFY( hrcv ); | |
175 | VERIFY( hrcv(x) == 4 ); | |
b6b66006 | 176 | #if __cpp_rtti |
4704f28e | 177 | VERIFY( typeid(cref(X_foo_cv)) == hrcv.target_type() ); |
b6b66006 | 178 | #endif |
4704f28e | 179 | VERIFY( wraps(hrcv, as_const(X_foo_cv)) ); |
7aec2c63 PC |
180 | } |
181 | ||
182 | int main() | |
183 | { | |
184 | test08(); | |
185 | return 0; | |
186 | } |