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 // <string>
11
12 // const_reference at(size_type pos) const;
13 // reference at(size_type pos);
14
15 #include <string>
16 #include <stdexcept>
17 #include <cassert>
18
19 #include "min_allocator.h"
20
21 template <class S>
22 void
test(S s,typename S::size_type pos)23 test(S s, typename S::size_type pos)
24 {
25 try
26 {
27 const S& cs = s;
28 assert(s.at(pos) == s[pos]);
29 assert(cs.at(pos) == cs[pos]);
30 assert(pos < cs.size());
31 }
32 catch (std::out_of_range&)
33 {
34 assert(pos >= s.size());
35 }
36 }
37
main()38 int main()
39 {
40 {
41 typedef std::string S;
42 test(S(), 0);
43 test(S("123"), 0);
44 test(S("123"), 1);
45 test(S("123"), 2);
46 test(S("123"), 3);
47 }
48 #if __cplusplus >= 201103L
49 {
50 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
51 test(S(), 0);
52 test(S("123"), 0);
53 test(S("123"), 1);
54 test(S("123"), 2);
55 test(S("123"), 3);
56 }
57 #endif
58 }
59