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 // <string>
10 
11 //       iterator begin();
12 // const_iterator begin() const;
13 
14 #include <string>
15 #include <cassert>
16 
17 #include "min_allocator.h"
18 
19 template <class S>
20 void
21 test(S s)
22 {
23     const S& cs = s;
24     typename S::iterator b = s.begin();
25     typename S::const_iterator cb = cs.begin();
26     if (!s.empty())
27     {
28         assert(*b == s[0]);
29     }
30     assert(b == cb);
31 }
32 
33 int main()
34 {
35     {
36     typedef std::string S;
37     test(S());
38     test(S("123"));
39     }
40 #if TEST_STD_VER >= 11
41     {
42     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
43     test(S());
44     test(S("123"));
45     }
46 #endif
47 }
48