forked from boostorg/core
82957de970
The uncaught_exceptions function is functionally equivalent to unhandled_exceptions_count in Boost.Log and implements functionality similar to the same named C++17 standard function. Tests and docs are also included. One notable difference from std::uncaught_exceptions is that the return type is unsigned rather than signed. This is deliberate as uncaught_exceptions must never return a negative value and unsigned int better documents that. Theoretically, as a counter, it may also overflow.
56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
/*
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* Copyright Andrey Semashev 2018.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* https://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file uncaught_exceptions.cpp
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* \author Andrey Semashev
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* \date 2018-11-10
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*
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* \brief This file contains tests for the uncaught_exceptions function.
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*
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* This file only contains the very basic checks of functionality that can be portably achieved
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* through C++03 std::uncaught_exception.
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*/
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#include <boost/core/uncaught_exceptions.hpp>
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#include <boost/core/lightweight_test.hpp>
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struct my_exception {};
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class exception_watcher
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{
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unsigned int& m_count;
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public:
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explicit exception_watcher(unsigned int& count) : m_count(count) {}
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~exception_watcher() { m_count = boost::core::uncaught_exceptions(); }
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};
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// Tests for uncaught_exceptions when used in a destructor while an exception propagates
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void test_in_destructor()
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{
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const unsigned int root_count = boost::core::uncaught_exceptions();
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unsigned int level1_count = root_count;
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try
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{
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exception_watcher watcher(level1_count);
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throw my_exception();
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}
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catch (...)
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{
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}
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BOOST_TEST_NE(root_count, level1_count);
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}
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int main()
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{
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test_in_destructor();
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return boost::report_errors();
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}
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