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52066eae | 1 | // { dg-do compile { target c++14 } } |
4457e88c | 2 | |
7adcbafe | 3 | // Copyright (C) 2013-2022 Free Software Foundation, Inc. |
4457e88c JW |
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 | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
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 | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <type_traits> | |
21 | ||
22 | using namespace std; | |
23 | ||
24 | template<typename Trait, typename Result> | |
25 | using test = is_same<typename Trait::type, Result>; | |
26 | ||
27 | static_assert( test<decay<bool>, decay_t<bool>>(), "decay<bool>" ); | |
28 | static_assert( test<decay<const int>, decay_t<const int>>(), | |
29 | "decay<const int>" ); | |
30 | static_assert( test<decay<int[4]>, decay_t<int[4]>>(), "decay<int[4]>" ); | |
31 | typedef void (fn_type) (); | |
32 | static_assert( test<decay<fn_type>, decay_t<fn_type>>(), "decay<fn_type>" ); | |
33 | typedef void (cfn_type) () const; | |
34 | static_assert( test<decay<cfn_type>, decay_t<cfn_type>>(), "decay<cfn_type>" ); |