blob: 42222de4b6edede24974696579bbdb7e386609e3 [file] [log] [blame]
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Can't test the system lib because this test enables debug mode
// MODULES_DEFINES: _LIBCPP_DEBUG=1
// UNSUPPORTED: with_system_cxx_lib
// UNSUPPORTED: c++98, c++03
// UNSUPPORTED: windows
// UNSUPPORTED: with_system_cxx_lib
// <list>
// Call prev(forward_iterator, -1)
#define _LIBCPP_DEBUG 0
#include <iterator>
#include "test_macros.h"
#include "debug_mode_helper.h"
#include "test_iterators.h"
int main(int, char**)
{
int a[] = {1, 2, 3};
bidirectional_iterator<int *> bidi(a+1);
std::prev(bidi, -1); // should work fine
std::prev(bidi, 0); // should work fine
std::prev(bidi, 1); // should work fine
forward_iterator<int *> it(a+1);
std::prev(it, -1); // should work fine
std::prev(it, 0); // should work fine
EXPECT_DEATH( std::prev(it, 1) ); // can't go backwards on a FwdIter
return 0;
}