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52066eae | 1 | // { dg-do compile { target c++11 } } |
7a90b0ca | 2 | |
cbe34bb5 | 3 | // Copyright (C) 2008-2017 Free Software Foundation, Inc. |
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4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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9 | // any later version. |
10 | // | |
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public License along | |
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17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | #include <functional> | |
21 | #include <type_traits> | |
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22 | |
23 | struct X {}; | |
24 | ||
25 | struct int_result_type { typedef int result_type; }; | |
26 | ||
27 | struct derives_unary : std::unary_function<int, int> {}; | |
28 | ||
29 | struct derives_binary : std::binary_function<int, float, int> {}; | |
30 | ||
31 | struct derives_unary_binary | |
32 | : std::unary_function<int, int>, | |
33 | std::binary_function<int, float, int> | |
34 | { | |
35 | typedef int result_type; | |
36 | }; | |
37 | ||
38 | void test01() | |
39 | { | |
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40 | using std::reference_wrapper; |
41 | using std::is_same; | |
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42 | |
43 | // Check result_type typedef | |
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44 | static_assert( is_same<reference_wrapper<int_result_type>::result_type, int>::value, "has result_type" ); |
45 | static_assert( is_same<reference_wrapper<derives_unary>::result_type, int>::value, "has result_type" ); | |
46 | static_assert( is_same<reference_wrapper<derives_binary>::result_type, int>::value, "has result_type" ); | |
47 | static_assert( is_same<reference_wrapper<derives_unary_binary>::result_type, int>::value, "has result_type" ); | |
48 | static_assert( is_same<reference_wrapper<int(void)>::result_type, int>::value, "has result_type" ); | |
49 | static_assert( is_same<reference_wrapper<int(*)(void)>::result_type, int>::value, "has result_type" ); | |
50 | static_assert( is_same<reference_wrapper<int (::X::*)()>::result_type, int>::value, "has result_type" ); | |
51 | static_assert( is_same<reference_wrapper<int (::X::*)(float)>::result_type, int>::value, "has result_type" ); | |
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52 | } |
53 | ||
54 | int main() | |
55 | { | |
56 | test01(); | |
57 | return 0; | |
58 | } |