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 // <iterator>
10 
11 // back_insert_iterator
12 
13 // back_insert_iterator<Cont>& operator++();
14 
15 #include <cassert>
16 #include <iterator>
17 #include <vector>
18 
19 #include "test_macros.h"
20 #include "nasty_containers.h"
21 #include "test_constexpr_container.h"
22 
23 template <class C>
24 TEST_CONSTEXPR_CXX20 bool
test(C c)25 test(C c)
26 {
27     std::back_insert_iterator<C> i(c);
28     std::back_insert_iterator<C>& r = ++i;
29     assert(&r == &i);
30     return true;
31 }
32 
main(int,char **)33 int main(int, char**)
34 {
35     test(std::vector<int>());
36     test(nasty_vector<int>());
37 #if TEST_STD_VER >= 20
38     test(ConstexprFixedCapacityDeque<int, 10>());
39     static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
40 #endif
41     return 0;
42 }
43