39 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <regex>10 11// class match_results<BidirectionalIterator, Allocator>12 13// size_type size() const;14// bool empty() const;15 16#include <regex>17#include <cassert>18#include "test_macros.h"19 20template <class CharT>21void22test()23{24 std::match_results<const CharT*> m;25 assert(m.empty());26 assert(m.size() == 0);27 const char s[] = "abcdefghijk";28 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));29 assert(!m.empty());30 assert(m.size() == 3);31}32 33int main(int, char**)34{35 test<char>();36 37 return 0;38}39