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

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2015-2019 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <regex>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_regex.h>
  23
  24 using namespace std;
  25 using namespace __gnu_test;
  26
  27 // libstdc++/64441
  28 void
  29 test01()
  30 {
  31   const char s[] = "abc";
  32   const std::regex re("(\\d+)|(\\w+)");
  33
  34   std::cmatch m;
  35   VERIFY(regex_search_debug(s, m, re));
  36
  37   std::tuple<bool, string, int, int> expected[] = {
  38       make_tuple(true, "abc", 0, 3),
  39       make_tuple(false, "", 3, 3),
  40       make_tuple(true, "abc", 0, 3),
  41       make_tuple(false, "", 3, 3),
  42   };
  43   for (size_t i = 0, n = m.size(); i <= n; ++i) {
  44       auto&& sub = m[i];
  45       VERIFY(sub.matched == std::get<0>(expected[i]));
  46       VERIFY(sub.str() == std::get<1>(expected[i]));
  47       VERIFY((sub.first - s) == std::get<2>(expected[i]));
  48       VERIFY((sub.second - s) == std::get<3>(expected[i]));
  49   }
  50 }
  51
  52 // libstdc++/64781
  53 void
  54 test02()
  55 {
  56   std::match_results<const char*> m;
  57   const char s[] = "a";
  58   VERIFY(regex_search_debug(s, m, std::regex("a")));
  59
  60   VERIFY(m.size() == 1);
  61
  62   VERIFY(m[0].first == s+0);
  63   VERIFY(m[0].second == s+1);
  64   VERIFY(m[0].matched == true);
  65
  66   VERIFY(m[42].first == s+1);
  67   VERIFY(m[42].second == s+1);
  68   VERIFY(m[42].matched == false);
  69 }
  70
  71 int
  72 main()
  73 {
  74   test01();
  75   test02();
  76   return 0;
  77 }