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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/optional/typedefs.cc
1 // { dg-options "-std=gnu++17" }
2 // { dg-do compile { target c++17 } }
4 // Copyright (C) 2014-2021 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
22 #include <type_traits>
26 using check1_t
= std::optional
<T
>;
28 using check2_t
= std::in_place_t
;
29 using check3_t
= std::nullopt_t
;
30 using check4_t
= std::bad_optional_access
;
32 static_assert(!std::is_base_of
<std::logic_error
, check4_t
>::value
,
33 "bad_optional_access must derive from exception");
34 static_assert(std::is_base_of
<std::exception
, check4_t
>::value
,
35 "bad_optional_access must derive from exception");