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 // REQUIRES: has-unix-headers
10 // UNSUPPORTED: c++03
11 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
12 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
13
14 // <list>
15
16 // Call advance(non-bidi iterator, -1)
17
18 #include <iterator>
19
20 #include "check_assertion.h"
21 #include "test_iterators.h"
22
main(int,char **)23 int main(int, char**) {
24 int a[] = {1, 2, 3};
25
26 bidirectional_iterator<int *> bidi(a+1);
27 std::advance(bidi, 1); // should work fine
28 std::advance(bidi, 0); // should work fine
29 std::advance(bidi, -1); // should work fine
30
31 forward_iterator<int *> it(a+1);
32 std::advance(it, 1); // should work fine
33 std::advance(it, 0); // should work fine
34 TEST_LIBCPP_ASSERT_FAILURE(std::advance(it, -1), "Attempt to advance(it, n) with negative n on a non-bidirectional iterator");
35
36 return 0;
37 }
38