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// <ios>
10
11// template <class charT, class traits = char_traits<charT> >
12// class basic_ios : public ios_base
13// {
14// public:
15// typedef charT char_type;
16// typedef typename traits::int_type int_type;
17// typedef typename traits::pos_type pos_type;
18// typedef typename traits::off_type off_type;
19// typedef traits traits_type;
20
21#include <ios>
22#include <type_traits>
23
24#include "test_macros.h"
25
26int main(int, char**)
27{
28 static_assert((std::is_base_of<std::ios_base, std::basic_ios<char> >::value), "");
29 static_assert((std::is_same<std::basic_ios<char>::char_type, char>::value), "");
30 static_assert((std::is_same<std::basic_ios<char>::traits_type, std::char_traits<char> >::value), "");
31 static_assert((std::is_same<std::basic_ios<char>::int_type, std::char_traits<char>::int_type>::value), "");
32 static_assert((std::is_same<std::basic_ios<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
33 static_assert((std::is_same<std::basic_ios<char>::off_type, std::char_traits<char>::off_type>::value), "");
34
35 return 0;
36}
37

source code of libcxx/test/std/input.output/iostreams.base/ios/types.pass.cpp