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 // Call front() on empty container.
13 
14 #if _LIBCPP_DEBUG >= 1
15 
16 #define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
17 
18 #include <string>
19 #include <cassert>
20 #include <iterator>
21 #include <exception>
22 #include <cstdlib>
23 
24 #include "min_allocator.h"
25 
main()26 int main()
27 {
28     {
29     typedef std::string S;
30     S s(1, '\0');
31     assert(s.front() == 0);
32     s.clear();
33     assert(s.front() == 0);
34     assert(false);
35     }
36 #if TEST_STD_VER >= 11
37     {
38     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
39     S s(1, '\0');
40     assert(s.front() == 0);
41     s.clear();
42     assert(s.front() == 0);
43     assert(false);
44     }
45 #endif
46 }
47 
48 #else
49 
main()50 int main()
51 {
52 }
53 
54 #endif
55