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gcc.gnu.org Git - gcc.git/blob - libstdc++-v3/testsuite/24_iterators/front_insert_iterator/constexpr.cc
1 // Copyright (C) 2020 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/>.
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
25 using value_type
= int;
27 constexpr int* begin() { return next
; }
28 constexpr int* end() { return std::end(data
); }
30 constexpr void push_front(int val
)
32 if (next
== std::begin(data
))
38 int* next
= std::end(data
);
45 std::front_insert_iterator
<container
> iter
;
46 iter
= std::front_inserter(c
);
51 return c
.data
[0] == 3 && c
.data
[1] == 2 && c
.data
[2] == 1;
54 static_assert( test01() );
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