libstdc++-v3/testsuite/28_regex/iterators/regex_iterator/char/64140.cc

   1 // { dg-do run { target c++11 } }
   2
   3 //
   4 // Copyright (C) 2014-2019 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 // libstdc++/64140
  22
  23 #include <regex>
  24 #include <testsuite_hooks.h>
  25
  26 void
  27 test01()
  28 {
  29   const std::regex e("z*");
  30   const std::string s("ab");
  31
  32   auto it = std::sregex_iterator(s.begin(), s.end(), e);
  33   auto end = std::sregex_iterator();
  34   VERIFY(it != end);
  35   VERIFY(!it->prefix().matched);
  36   ++it;
  37   VERIFY(it != end);
  38   VERIFY(it->prefix().matched);
  39   ++it;
  40   VERIFY(it != end);
  41   VERIFY(it->prefix().matched);
  42   ++it;
  43   VERIFY(it == end);
  44 }
  45
  46 int
  47 main()
  48 {
  49   test01();
  50   return 0;
  51 }