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 pop_front();
13
14#include <forward_list>
15#include <cassert>
16
17#include "MoveOnly.h"
18#include "min_allocator.h"
19
20int main()
21{
22    {
23        typedef int T;
24        typedef std::forward_list<T> C;
25        typedef std::forward_list<T> C;
26        C c;
27        c.push_front(1);
28        c.push_front(3);
29        c.pop_front();
30        assert(distance(c.begin(), c.end()) == 1);
31        assert(c.front() == 1);
32        c.pop_front();
33        assert(distance(c.begin(), c.end()) == 0);
34    }
35#if TEST_STD_VER >= 11
36    {
37        typedef MoveOnly T;
38        typedef std::forward_list<T> C;
39        C c;
40        c.push_front(1);
41        c.push_front(3);
42        c.pop_front();
43        assert(distance(c.begin(), c.end()) == 1);
44        assert(c.front() == 1);
45        c.pop_front();
46        assert(distance(c.begin(), c.end()) == 0);
47    }
48    {
49        typedef int T;
50        typedef std::forward_list<T, min_allocator<T>> C;
51        typedef std::forward_list<T, min_allocator<T>> C;
52        C c;
53        c.push_front(1);
54        c.push_front(3);
55        c.pop_front();
56        assert(distance(c.begin(), c.end()) == 1);
57        assert(c.front() == 1);
58        c.pop_front();
59        assert(distance(c.begin(), c.end()) == 0);
60    }
61    {
62        typedef MoveOnly T;
63        typedef std::forward_list<T, min_allocator<T>> C;
64        C c;
65        c.push_front(1);
66        c.push_front(3);
67        c.pop_front();
68        assert(distance(c.begin(), c.end()) == 1);
69        assert(c.front() == 1);
70        c.pop_front();
71        assert(distance(c.begin(), c.end()) == 0);
72    }
73#endif
74}
75