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1 // Copyright (C) 2007-2023 Free Software Foundation, Inc.
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)
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.
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/>.
20 #include <testsuite_hooks.h>
22 // Based on Langer Kreft "Standard C++ IOStreams and Locales" p 316-318
30 typedef std::ctype
<char> base_facet
;
31 typedef std::ctype_byname
<char> derived_facet
;
33 locale loc_c
= locale::classic();
34 locale loc_base
= loc_c
;
35 locale
loc_derived(loc_c
, new derived_facet("C"));
37 // Standard base facet.
38 VERIFY( has_facet
<base_facet
>(loc_c
) );
39 VERIFY( has_facet
<base_facet
>(loc_base
) );
40 VERIFY( has_facet
<base_facet
>(loc_derived
) );
42 // Standard derived facet.
44 VERIFY( !has_facet
<derived_facet
>(loc_c
) );
45 VERIFY( !has_facet
<derived_facet
>(loc_base
) );
47 VERIFY( has_facet
<derived_facet
>(loc_derived
) );
53 if (has_facet
<derived_facet
>(loc_base
))
55 use_facet
<derived_facet
>(loc_base
).widen('k');
61 // Expect no exception.
68 if (has_facet
<base_facet
>(loc_derived
))
69 use_facet
<base_facet
>(loc_derived
).widen('k');
75 // Expect no exception.