1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17
10// UNSUPPORTED: no-filesystem, no-localization, no-tzdb
11
12// XFAIL: libcpp-has-no-experimental-tzdb
13// XFAIL: availability-tzdb-missing
14
15// <chrono>
16
17// template<class T> struct zoned_traits {};
18//
19// A specialization for const time_zone* is provided by the implementation:
20// template<> struct zoned_traits<const time_zone*> { ... }
21
22#include <chrono>
23#include <type_traits>
24
25// This test test whether non-specialized versions exhibit the expected
26// behavior. (Note these specializations are not really useful.)
27static_assert(std::is_trivially_copyable_v<std::chrono::zoned_traits<int>>);
28static_assert(std::is_trivially_copyable_v<std::chrono::zoned_traits<float>>);
29static_assert(std::is_trivially_copyable_v<std::chrono::zoned_traits<void*>>);
30static_assert(std::is_trivially_default_constructible_v<std::chrono::zoned_traits<int>>);
31static_assert(std::is_trivially_default_constructible_v<std::chrono::zoned_traits<float>>);
32static_assert(std::is_trivially_default_constructible_v<std::chrono::zoned_traits<void*>>);
33
34struct foo {};
35static_assert(std::is_empty_v<std::chrono::zoned_traits<foo>>);
36static_assert(std::is_trivially_copyable_v<std::chrono::zoned_traits<foo>>);
37static_assert(std::is_trivially_default_constructible_v<std::chrono::zoned_traits<foo>>);
38

source code of libcxx/test/std/time/time.zone/time.zone.zonedtraits/types.compile.pass.cpp