libstdc++-v3/testsuite/28_regex/match_results/out_of_range_submatches.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-timeout-factor 2 }
   3
   4 // Copyright (C) 2015-2021 Free Software Foundation, Inc.
   5 //
   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)
  10 // any later version.
  11 //
  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.
  16 //
  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/>.
  20
  21 #include <regex>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_regex.h>
  24
  25 using namespace std;
  26 using namespace __gnu_test;
  27
  28 // libstdc++/64441
  29 void
  30 test01()
  31 {
  32   const char s[] = "abc";
  33   const std::regex re("(\\d+)|(\\w+)");
  34
  35   std::cmatch m;
  36   VERIFY(regex_search_debug(s, m, re));
  37
  38   std::tuple<bool, string, int, int> expected[] = {
  39       make_tuple(true, "abc", 0, 3),
  40       make_tuple(false, "", 3, 3),
  41       make_tuple(true, "abc", 0, 3),
  42       make_tuple(false, "", 3, 3),
  43   };
  44   for (size_t i = 0, n = m.size(); i <= n; ++i) {
  45       auto&& sub = m[i];
  46       VERIFY(sub.matched == std::get<0>(expected[i]));
  47       VERIFY(sub.str() == std::get<1>(expected[i]));
  48       VERIFY((sub.first - s) == std::get<2>(expected[i]));
  49       VERIFY((sub.second - s) == std::get<3>(expected[i]));
  50   }
  51 }
  52
  53 // libstdc++/64781
  54 void
  55 test02()
  56 {
  57   std::match_results<const char*> m;
  58   const char s[] = "a";
  59   VERIFY(regex_search_debug(s, m, std::regex("a")));
  60
  61   VERIFY(m.size() == 1);
  62
  63   VERIFY(m[0].first == s+0);
  64   VERIFY(m[0].second == s+1);
  65   VERIFY(m[0].matched == true);
  66
  67   VERIFY(m[42].first == s+1);
  68   VERIFY(m[42].second == s+1);
  69   VERIFY(m[42].matched == false);
  70 }
  71
  72 int
  73 main()
  74 {
  75   test01();
  76   test02();
  77   return 0;
  78 }