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a945c346 | 1 | // Copyright (C) 2019-2024 Free Software Foundation, Inc. |
846541dd JW |
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-do run } | |
19 | ||
20 | #include <algorithm> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | // DR 426. search_n(), fill_n(), and generate_n() with negative n | |
24 | ||
25 | struct Gen | |
26 | { | |
27 | int operator()() const { throw 1; } | |
28 | }; | |
29 | ||
30 | void | |
31 | test01() | |
32 | { | |
33 | int i = 99; | |
34 | std::generate_n(&i, 0, Gen()); | |
35 | VERIFY( i == 99 ); | |
36 | std::generate_n(&i, -1, Gen()); | |
37 | VERIFY( i == 99 ); | |
38 | std::generate_n(&i, -100, Gen()); | |
39 | VERIFY( i == 99 ); | |
40 | } | |
41 | ||
42 | int | |
43 | main() | |
44 | { | |
45 | test01(); | |
46 | } |