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 // UNSUPPORTED: c++03, windows 10 // 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}} 11 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1 12 13 // <list> 14 15 // Call advance(non-bidi iterator, -1) 16 17 #include <iterator> 18 19 #include "check_assertion.h" 20 #include "test_iterators.h" 21 22 int main(int, char**) { 23 int a[] = {1, 2, 3}; 24 25 bidirectional_iterator<int *> bidi(a+1); 26 std::advance(bidi, 1); // should work fine 27 std::advance(bidi, 0); // should work fine 28 std::advance(bidi, -1); // should work fine 29 30 forward_iterator<int *> it(a+1); 31 std::advance(it, 1); // should work fine 32 std::advance(it, 0); // should work fine 33 TEST_LIBCPP_ASSERT_FAILURE(std::advance(it, -1), "Attempt to advance(it, n) with negative n on a non-bidirectional iterator"); 34 35 return 0; 36 } 37