1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <ios>
11
12// template <class charT, class traits> class basic_ios
13
14// char_type widen(char c) const;
15
16#include <ios>
17#include <cassert>
18
19int main()
20{
21    const std::ios ios(0);
22    assert(ios.widen('c') == 'c');
23}
24