//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <ios>

// class ios_base

// ~ios_base()

#include <ios>
#include <string>
#include <locale>
#include <cassert>

#include "test_macros.h"

class test
    : public std::ios
{
public:
    test()
    {
        init(0);
    }
};

bool f1_called = false;
bool f2_called = false;
bool f3_called = false;

void f1(std::ios_base::event ev, std::ios_base& stream, int index)
{
    if (ev == std::ios_base::erase_event)
    {
        assert(!f1_called);
        assert( f2_called);
        assert( f3_called);
        assert(stream.getloc().name() == "C");
        assert(index == 4);
        f1_called = true;
    }
}

void f2(std::ios_base::event ev, std::ios_base& stream, int index)
{
    if (ev == std::ios_base::erase_event)
    {
        assert(!f1_called);
        assert(!f2_called);
        assert( f3_called);
        assert(stream.getloc().name() == "C");
        assert(index == 5);
        f2_called = true;
    }
}

void f3(std::ios_base::event ev, std::ios_base& stream, int index)
{
    if (ev == std::ios_base::erase_event)
    {
        assert(!f1_called);
        assert(!f2_called);
        assert(!f3_called);
        assert(stream.getloc().name() == "C");
        assert(index == 6);
        f3_called = true;
    }
}

int main(int, char**)
{
    {
        test t;
        std::ios_base& b = t;
        b.register_callback(f1, 4);
        b.register_callback(f2, 5);
        b.register_callback(f3, 6);
    }
    assert(f1_called);
    assert(f2_called);
    assert(f3_called);

  return 0;
}