//===----------------------------------------------------------------------===//
//
// 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
// UNSUPPORTED: with_system_cxx_lib

// <list>

// void pop_back();

#define _LIBCPP_DEBUG 1
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))

#include <list>
#include <cstdlib>
#include <cassert>

int main(int, char**)
{
    int a[] = {1, 2, 3};
    std::list<int> c(a, a+3);
    c.pop_back();
    assert(c == std::list<int>(a, a+2));
    c.pop_back();
    assert(c == std::list<int>(a, a+1));
    c.pop_back();
    assert(c.empty());
    c.pop_back(); // operation under test
    assert(false);

  return 0;
}