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 // iterator       begin();
12 // iterator       end();
13 // const_iterator begin()  const;
14 // const_iterator end()    const;
15 // const_iterator cbegin() const;
16 // const_iterator cend()   const;
17 
18 #include <vector>
19 #include <cassert>
20 #include <iterator>
21 
22 #include "test_macros.h"
23 #include "min_allocator.h"
24 
25 int main(int, char**)
26 {
27     using IterRefT = std::iterator_traits<std::vector<bool>::iterator>::reference;
28     ASSERT_SAME_TYPE(IterRefT, std::vector<bool>::reference);
29 
30     using ConstIterRefT = std::iterator_traits<std::vector<bool>::const_iterator>::reference;
31 #if !defined(_LIBCPP_VERSION) || defined(_LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL)
32     ASSERT_SAME_TYPE(ConstIterRefT, bool);
33 #else
34     ASSERT_SAME_TYPE(ConstIterRefT, std::__bit_const_reference<std::vector<bool> >);
35 #endif
36     {
37         typedef bool T;
38         typedef std::vector<T> C;
39         C c;
40         C::iterator i = c.begin();
41         C::iterator j = c.end();
42         assert(std::distance(i, j) == 0);
43         assert(i == j);
44     }
45     {
46         typedef bool T;
47         typedef std::vector<T> C;
48         const C c;
49         C::const_iterator i = c.begin();
50         C::const_iterator j = c.end();
51         assert(std::distance(i, j) == 0);
52         assert(i == j);
53     }
54     {
55         typedef bool T;
56         typedef std::vector<T> C;
57         C c;
58         C::const_iterator i = c.cbegin();
59         C::const_iterator j = c.cend();
60         assert(std::distance(i, j) == 0);
61         assert(i == j);
62         assert(i == c.end());
63     }
64     {
65         typedef bool T;
66         typedef std::vector<T> C;
67         C::iterator i;
68         C::const_iterator j;
69     }
70 #if TEST_STD_VER >= 11
71     {
72         typedef bool T;
73         typedef std::vector<T, min_allocator<T>> C;
74         C c;
75         C::iterator i = c.begin();
76         C::iterator j = c.end();
77         assert(std::distance(i, j) == 0);
78         assert(i == j);
79     }
80     {
81         typedef bool T;
82         typedef std::vector<T, min_allocator<T>> C;
83         const C c;
84         C::const_iterator i = c.begin();
85         C::const_iterator j = c.end();
86         assert(std::distance(i, j) == 0);
87         assert(i == j);
88     }
89     {
90         typedef bool T;
91         typedef std::vector<T, min_allocator<T>> C;
92         C c;
93         C::const_iterator i = c.cbegin();
94         C::const_iterator j = c.cend();
95         assert(std::distance(i, j) == 0);
96         assert(i == j);
97         assert(i == c.end());
98     }
99     {
100         typedef bool T;
101         typedef std::vector<T, min_allocator<T>> C;
102         C::iterator i;
103         C::const_iterator j;
104     }
105 #endif
106 #if TEST_STD_VER > 11
107     { // N3644 testing
108         std::vector<bool>::iterator ii1{}, ii2{};
109         std::vector<bool>::iterator ii4 = ii1;
110         std::vector<bool>::const_iterator cii{};
111         assert ( ii1 == ii2 );
112         assert ( ii1 == ii4 );
113 
114         assert (!(ii1 != ii2 ));
115 
116         assert ( (ii1 == cii ));
117         assert ( (cii == ii1 ));
118         assert (!(ii1 != cii ));
119         assert (!(cii != ii1 ));
120         assert (!(ii1 <  cii ));
121         assert (!(cii <  ii1 ));
122         assert ( (ii1 <= cii ));
123         assert ( (cii <= ii1 ));
124         assert (!(ii1 >  cii ));
125         assert (!(cii >  ii1 ));
126         assert ( (ii1 >= cii ));
127         assert ( (cii >= ii1 ));
128         assert (cii - ii1 == 0);
129         assert (ii1 - cii == 0);
130     }
131 #endif
132 
133   return 0;
134 }
135