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 "test_macros.h"
18 #include "min_allocator.h"
19 
20 template <class S>
21 void
22 test(S s)
23 {
24     const S& cs = s;
25     typename S::iterator b = s.begin();
26     typename S::const_iterator cb = cs.begin();
27     if (!s.empty())
28     {
29         assert(*b == s[0]);
30     }
31     assert(b == cb);
32 }
33 
34 int main(int, char**)
35 {
36     {
37     typedef std::string S;
38     test(S());
39     test(S("123"));
40     }
41 #if TEST_STD_VER >= 11
42     {
43     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
44     test(S());
45     test(S("123"));
46     }
47 #endif
48 
49   return 0;
50 }
51