1 // Copyright (C) 2020 Free Software Foundation, Inc. 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 { target c++11 } } 19 // { dg-timeout-factor 2 } 20 21 #include <regex> 22 #include <testsuite_hooks.h> 23 24 struct iterator 25 { 26 using value_type = char; 27 using difference_type = std::ptrdiff_t; 28 using reference = char&; 29 using pointer = char*; 30 using iterator_category = std::bidirectional_iterator_tag; 31 iteratoriterator32 iterator() : ptr() { } iteratoriterator33 explicit iterator(pointer p) : ptr(p) { } 34 operator ++iterator35 iterator& operator++() { if (bang) throw 1; ++ptr; return *this; } operator ++iterator36 iterator operator++(int) { auto copy = *this; ++*this; return copy; } operator --iterator37 iterator& operator--() { if (bang) throw 1; --ptr; return *this; } operator --iterator38 iterator operator--(int) { auto copy = *this; --*this; return copy; } 39 operator *iterator40 reference operator*() const noexcept { return *ptr; } operator ->iterator41 pointer operator->() const noexcept { return ptr; } 42 operator ==iterator43 bool operator==(iterator rhs) const noexcept { return ptr == rhs.ptr; } operator !=iterator44 bool operator!=(iterator rhs) const noexcept { return ptr != rhs.ptr; } 45 46 static bool bang; 47 48 private: 49 pointer ptr; 50 }; 51 52 bool iterator::bang = false; 53 main()54int main() 55 { 56 char str[] = "abc"; 57 std::regex r(str); 58 std::match_results<iterator> m; 59 std::regex_match(iterator(str), iterator(str+3), m, r); 60 iterator::bang = true; 61 bool caught = false; 62 try { 63 (void) (m == m); 64 } catch (int) { 65 caught = true; 66 } 67 VERIFY( caught ); 68 caught = false; 69 70 try { 71 (void) (m != m); 72 } catch (int) { 73 caught = true; 74 } 75 VERIFY( caught ); 76 } 77