1 // { dg-do run { target c++11 } }
2 // { dg-timeout-factor 2 }
3 
4 //
5 // 2013-09-02  Tim Shen <timshen91@gmail.com>
6 //
7 // Copyright (C) 2013-2021 Free Software Foundation, Inc.
8 //
9 // This file is part of the GNU ISO C++ Library.  This library is free
10 // software; you can redistribute it and/or modify it under the
11 // terms of the GNU General Public License as published by the
12 // Free Software Foundation; either version 3, or (at your option)
13 // any later version.
14 //
15 // This library is distributed in the hope that it will be useful,
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 // GNU General Public License for more details.
19 //
20 // You should have received a copy of the GNU General Public License along
21 // with this library; see the file COPYING3.  If not see
22 // <http://www.gnu.org/licenses/>.
23 
24 // 28.11.2 regex_match
25 // Tests ECMAScript empty-grouping against a C-string.
26 
27 #include <regex>
28 #include <testsuite_hooks.h>
29 #include <testsuite_regex.h>
30 
31 using namespace __gnu_test;
32 using namespace std;
33 
34 void
test01()35 test01()
36 {
37   {
38     regex re("()*\\1");
39     cmatch m;
40     const char s[] = "";
41     VERIFY( regex_match_debug(s, m, re) );
42     VERIFY( m.size() == 2 );
43     VERIFY( m[0].matched );
44     VERIFY( m[1].matched );
45   }
46   {
47     regex re("()*");
48     cmatch m;
49     const char s[] = "";
50     VERIFY( regex_match_debug(s, m, re) );
51   }
52   VERIFY(regex_match_debug("", regex("(?:)*")));
53 }
54 
55 int
main()56 main()
57 {
58   test01();
59   return 0;
60 }
61