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 // template <class BidirectionalIterator, class Allocator, class charT, class traits>
12 // bool
13 // regex_search(BidirectionalIterator first, BidirectionalIterator last,
14 // match_results<BidirectionalIterator, Allocator>& m,
15 // const basic_regex<charT, traits>& e,
16 // regex_constants::match_flag_type flags = regex_constants::match_default);
17
18 #include <regex>
19 #include <cassert>
20 #include "test_macros.h"
21
main(int,char **)22 int main(int, char**)
23 {
24 // Iterating over /^a/ should yield one instance at the beginning
25 // of the text.
26
27 const char *text = "aaa\naa";
28 std::regex re("^a");
29 std::cregex_iterator it(text, text+6, re);
30 std::cregex_iterator end = std::cregex_iterator();
31
32 assert(it->str() == "a");
33 assert(it->position(0) == 0);
34 assert(it->length(0) == 1);
35
36 ++it;
37 assert(it == end);
38
39 return 0;
40 }
41