xref: /llvm-project/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size.pass.cpp (revision 2fdf202493fcef9a3cf7c1b14843090d9eef2539)
1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <regex>
11 
12 // template <class charT, class traits = regex_traits<charT>> class basic_regex;
13 
14 // basic_regex(const charT* p, size_t len);
15 
16 #include <regex>
17 #include <cassert>
18 
19 template <class CharT>
20 void
21 test(const CharT* p, std::size_t len, unsigned mc)
22 {
23     std::basic_regex<CharT> r(p, len);
24     assert(r.flags() == std::regex_constants::ECMAScript);
25     assert(r.mark_count() == mc);
26 }
27 
28 int main()
29 {
30     test("\\(a\\)", 5, 0);
31     test("\\(a[bc]\\)", 9, 0);
32     test("\\(a\\([bc]\\)\\)", 13, 0);
33     test("(a([bc]))", 9, 2);
34 
35     test("(\0)(b)(c)(d)", 12, 4);
36     test("(\0)(b)(c)(d)", 9, 3);
37     test("(\0)(b)(c)(d)", 3, 1);
38     test("(\0)(b)(c)(d)", 0, 0);
39 }
40