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-exception
6//
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
19void
20test()
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

source code of libcxx/test/std/re/re.results/re.results.acc/prefix.pass.cpp