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/*
* Copyright Andrey Semashev 2018.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* https://www.boost.org/LICENSE_1_0.txt)
*/
/*!
* \file uncaught_exceptions_np.cpp
* \author Andrey Semashev
* \date 2018-11-10
*
* \brief This file contains tests for the uncaught_exceptions function.
*
* This file contains checks that are compiler specific and not quite portable or require C++17.
*/
#include <boost/core/uncaught_exceptions.hpp>
#if !defined(BOOST_CORE_UNCAUGHT_EXCEPTIONS_EMULATED)
#include <boost/core/lightweight_test.hpp>
struct my_exception1 {};
struct my_exception2 {};
class exception_watcher2
{
unsigned int& m_count;
public:
explicit exception_watcher2(unsigned int& count) : m_count(count) {}
~exception_watcher2() { m_count = boost::core::uncaught_exceptions(); }
};
class exception_watcher1
{
unsigned int& m_count1;
unsigned int& m_count2;
public:
exception_watcher1(unsigned int& count1, unsigned int& count2) : m_count1(count1), m_count2(count2) {}
~exception_watcher1()
{
m_count1 = boost::core::uncaught_exceptions();
try
{
exception_watcher2 watcher2(m_count2);
throw my_exception2();
}
catch (...)
{
}
}
};
// Tests for uncaught_exceptions when used in nested destructors while an exception propagates
void test_in_nested_destructors()
{
const unsigned int root_count = boost::core::uncaught_exceptions();
unsigned int level1_count = root_count, level2_count = root_count;
try
{
exception_watcher1 watcher1(level1_count, level2_count);
throw my_exception1();
}
catch (...)
{
}
BOOST_TEST_NE(root_count, level1_count);
BOOST_TEST_NE(root_count, level2_count);
BOOST_TEST_NE(level1_count, level2_count);
}
int main()
{
test_in_nested_destructors();
return boost::report_errors();
}
#else
int main()
{
return 0;
}
#endif
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