1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <list>
10 
11 // void      unique(); // before C++20
12 // size_type unique(); // C++20 and later
13 
14 #include <list>
15 #include <cassert>
16 
17 #include "test_macros.h"
18 #include "min_allocator.h"
19 
20 int main(int, char**)
21 {
22     {
23     int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
24     int a2[] = {2, 1, 4, 3};
25     typedef std::list<int> L;
26     L c(a1, a1+sizeof(a1)/sizeof(a1[0]));
27 #if TEST_STD_VER > 17
28 	ASSERT_SAME_TYPE(L::size_type, decltype(c.unique()));
29     assert(c.unique() == 5);
30 #else
31 	ASSERT_SAME_TYPE(void,         decltype(c.unique()));
32     c.unique();
33 #endif
34     assert(c == std::list<int>(a2, a2+4));
35     }
36 #if TEST_STD_VER >= 11
37     {
38     int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
39     int a2[] = {2, 1, 4, 3};
40     std::list<int, min_allocator<int>> c(a1, a1+sizeof(a1)/sizeof(a1[0]));
41 #if TEST_STD_VER > 17
42     assert(c.unique() == 5);
43 #else
44     c.unique();
45 #endif
46     assert((c == std::list<int, min_allocator<int>>(a2, a2+4)));
47     }
48 #endif
49 
50   return 0;
51 }
52