blob: fe559401de3e86d2dccd5a2221a4ff285dc16b3e [file] [log] [blame]
// Copyright (C) 2007-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <string>
#include <locale>
#include <testsuite_hooks.h>
// Based on Langer Kreft "Standard C++ IOStreams and Locales" p 316-318
// PR libstdc++/30127
// PR libstdc++/34449
int main()
{
using std::locale;
using std::has_facet;
using std::use_facet;
typedef std::ctype<char> base_facet;
typedef std::ctype_byname<char> derived_facet;
locale loc_c = locale::classic();
locale loc_base = loc_c;
locale loc_derived(loc_c, new derived_facet("C"));
// Standard base facet.
VERIFY( has_facet<base_facet>(loc_c) );
VERIFY( has_facet<base_facet>(loc_base) );
VERIFY( has_facet<base_facet>(loc_derived) );
// Standard derived facet.
VERIFY( !has_facet<derived_facet>(loc_c) );
VERIFY( !has_facet<derived_facet>(loc_base) );
VERIFY( has_facet<derived_facet>(loc_derived) );
// 1
try
{
if (has_facet<derived_facet>(loc_base))
{
use_facet<derived_facet>(loc_base).widen('k');
VERIFY( true );
}
}
catch (...)
{
// Expect no exception.
VERIFY( true );
}
// 2
try
{
if (has_facet<base_facet>(loc_derived))
use_facet<base_facet>(loc_derived).widen('k');
else
VERIFY( true );
}
catch (...)
{
// Expect no exception.
VERIFY( true );
}
return 0;
}