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 // <forward_list>
11 
12 // void clear();
13 
14 #include <forward_list>
15 #include <cassert>
16 
17 #include "../../../NotConstructible.h"
18 #include "../../../min_allocator.h"
19 
20 int main()
21 {
22     {
23         typedef NotConstructible T;
24         typedef std::forward_list<T> C;
25         C c;
26         c.clear();
27         assert(distance(c.begin(), c.end()) == 0);
28     }
29     {
30         typedef int T;
31         typedef std::forward_list<T> C;
32         const T t[] = {0, 1, 2, 3, 4};
33         C c(std::begin(t), std::end(t));
34 
35         c.clear();
36         assert(distance(c.begin(), c.end()) == 0);
37 
38         c.clear();
39         assert(distance(c.begin(), c.end()) == 0);
40     }
41 #if __cplusplus >= 201103L
42     {
43         typedef NotConstructible T;
44         typedef std::forward_list<T, min_allocator<T>> C;
45         C c;
46         c.clear();
47         assert(distance(c.begin(), c.end()) == 0);
48     }
49     {
50         typedef int T;
51         typedef std::forward_list<T, min_allocator<T>> C;
52         const T t[] = {0, 1, 2, 3, 4};
53         C c(std::begin(t), std::end(t));
54 
55         c.clear();
56         assert(distance(c.begin(), c.end()) == 0);
57 
58         c.clear();
59         assert(distance(c.begin(), c.end()) == 0);
60     }
61 #endif
62 }
63