37 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// const_reference prefix() const;14 15#include <regex>16#include <cassert>17#include "test_macros.h"18 19void20test()21{22 std::match_results<const char*> m;23 const char s[] = "abcdefghijk";24 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));25 26 assert(m.prefix().first == s);27 assert(m.prefix().second == s+2);28 assert(m.prefix().matched == true);29}30 31int main(int, char**)32{33 test();34 35 return 0;36}37