mirror of
https://github.com/revng/revng
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Alessandro Di Federico
8c148607d3
Sometimes, dealing with move-semantics in C++ can be challenging. To mitigate this problem, this commit introduces `ClassSentinel`, a simple class that can be added as a member of a class and that will allow the user to easily monitor if an instance of a class is used after being moved in an unwanted way. To do so, simply call the `ClassSentinel::check` method on the class member. `ClassSentinel` performs similar (but less reliable) checks on usage of destroyed objects. `ClassSentinel` can also (optionally, though the `SENTINEL_STACKTRACES` macro) collect stack traces of the points where the object was moved or destroyed. This commit also includes some basic testing for the class.
39 lines
813 B
C++
39 lines
813 B
C++
/// \file sentinel.cpp
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/// \brief Tests for ClassSentinel
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//
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// This file is distributed under the MIT License. See LICENSE.md for details.
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//
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// Standard includes
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// Boost includes
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#define BOOST_TEST_MODULE StackAnalysis
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#include <boost/test/unit_test.hpp>
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// Local includes
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#include "classsentinel.h"
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struct TestClass {
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ClassSentinel Sentinel;
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};
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BOOST_AUTO_TEST_CASE(Sentinel) {
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TestClass *DanglingPointer = nullptr;
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{
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TestClass Instance;
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BOOST_TEST(!Instance.Sentinel.isMoved());
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BOOST_TEST(!Instance.Sentinel.isDestroyed());
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TestClass OtherInstance = std::move(Instance);
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BOOST_TEST(Instance.Sentinel.isMoved());
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BOOST_TEST(!Instance.Sentinel.isDestroyed());
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DanglingPointer = &Instance;
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}
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BOOST_TEST(DanglingPointer->Sentinel.isDestroyed());
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}
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