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 // UNSUPPORTED: c++98, c++03, c++11
11 
12 // <experimental/any>
13 
14 // any::clear() noexcept
15 
16 #include <experimental/any>
17 #include <cassert>
18 
19 #include "any_helpers.h"
20 
main()21 int main()
22 {
23     using std::experimental::any;
24     using std::experimental::any_cast;
25     // empty
26     {
27         any a;
28 
29         // noexcept check
30         static_assert(
31             noexcept(a.clear())
32           , "any.clear() must be noexcept"
33           );
34 
35         assertEmpty(a);
36 
37         a.clear();
38 
39         assertEmpty(a);
40     }
41     // small object
42     {
43         any a((small(1)));
44         assert(small::count == 1);
45         assertContains<small>(a, 1);
46 
47         a.clear();
48 
49         assertEmpty<small>(a);
50         assert(small::count == 0);
51     }
52     // large object
53     {
54         any a(large(1));
55         assert(large::count == 1);
56         assertContains<large>(a);
57 
58         a.clear();
59 
60         assertEmpty<large>(a);
61         assert(large::count == 0);
62     }
63 }
64