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comparison libstdc++-v3/testsuite/24_iterators/insert_iterator/constexpr.cc @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
1 // Copyright (C) 2020 Free Software Foundation, Inc.
2 //
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)
7 // any later version.
8
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.
13
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/>.
17
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
20
21 #include <iterator>
22
23 #ifndef __cpp_lib_constexpr_iterator
24 # error "Feature test macro for constexpr insert iterators is missing in <iterator>"
25 #elif __cpp_lib_constexpr_iterator < 201811L
26 # error "Feature test macro for constexpr insert iterators has wrong value in <iterator>"
27 #endif
28
29 struct container
30 {
31 using value_type = int;
32
33 constexpr int* begin() { return std::begin(data); }
34 constexpr int* end() { return last; }
35
36 constexpr int* insert(int* pos, int val)
37 {
38 if (last == std::end(data))
39 throw val;
40 for (int* i = last++; i != pos; --i)
41 i[1] = i[0];
42 *pos = val;
43 return pos;
44 }
45
46 int data[3];
47 int* last = std::begin(data);
48 };
49
50 constexpr bool
51 test01()
52 {
53 container c;
54 std::insert_iterator<container> iter;
55 iter = std::inserter(c, c.begin());
56 *iter++ = 1;
57 int i = 2;
58 *iter = i;
59 *++iter = 3;
60 return c.data[0] == 1 && c.data[1] == 2 && c.data[2] == 3;
61 }
62
63 static_assert( test01() );