xref: /llvm-project/libcxx/test/std/containers/sequences/vector/vector.modifiers/clear.pass.cpp (revision e3dd9f7e66fec22986605da2dcd8120a7864455d)
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 // <vector>
10 
11 // void clear() noexcept;
12 
13 #include <vector>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 #include "min_allocator.h"
18 #include "asan_testing.h"
19 
tests()20 TEST_CONSTEXPR_CXX20 bool tests()
21 {
22     {
23     int a[] = {1, 2, 3};
24     std::vector<int> c(a, a+3);
25     ASSERT_NOEXCEPT(c.clear());
26     c.clear();
27     assert(c.empty());
28     LIBCPP_ASSERT(c.__invariants());
29     LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
30     }
31 #if TEST_STD_VER >= 11
32     {
33     int a[] = {1, 2, 3};
34     std::vector<int, min_allocator<int>> c(a, a+3);
35     ASSERT_NOEXCEPT(c.clear());
36     c.clear();
37     assert(c.empty());
38     LIBCPP_ASSERT(c.__invariants());
39     LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
40     }
41     {
42       int a[] = {1, 2, 3};
43       std::vector<int, safe_allocator<int>> c(a, a + 3);
44       ASSERT_NOEXCEPT(c.clear());
45       c.clear();
46       assert(c.empty());
47       LIBCPP_ASSERT(c.__invariants());
48       LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
49     }
50 #endif
51 
52     return true;
53 }
54 
main(int,char **)55 int main(int, char**)
56 {
57     tests();
58 #if TEST_STD_VER > 17
59     static_assert(tests());
60 #endif
61     return 0;
62 }
63