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comparison libstdc++-v3/testsuite/std/time/clock/file/overview.cc @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
1 // Copyright (C) 2020 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
13
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
17
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
20
21 #include <chrono>
22
23 using std::chrono::file_clock;
24
25 // Cpp17Clock requirements:
26
27 // New type so that is_clock<file_clock> specialization isn't used.
28 struct C : file_clock { };
29 static_assert( std::chrono::is_clock_v<C> );
30
31 // Cpp17TrivialClock requirements:
32
33 // A trivial clock's rep must be a numeric type, which is true for
34 // libstdc++ because we use an integral type.
35 static_assert( std::is_integral_v<file_clock::rep> );
36
37 // We meet the recursive Cpp17TrivialClock requirement by using the same clock:
38 static_assert( std::is_same_v<file_clock::time_point::clock, file_clock> );
39
40 // chrono::file_clock requirements:
41
42 static_assert( std::is_signed_v<file_clock::rep> );
43 static_assert( noexcept(file_clock::now()) );