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79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
// Copyright (C) 2016 Intel Corporation.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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/*
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* This file exists because tst_qsharedpointer.cpp is compiled with
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* QT_SHAREDPOINTER_TRACK_POINTERS. That changes some behavior.
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*
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* Note that most of these tests may yield false-positives in debug mode, but
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* they should not yield false negatives. That is, they may report PASS when
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* they are failing, but they should not produce FAILs.
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*
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* The reason for that is because of C++'s One Definition Rule: the macro
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* changes some functions and, in debug mode, they will not be inlined. At link
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* time, the two functions would be merged.
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*/
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#include <qsharedpointer.h>
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#include <QTest>
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#include "nontracked.h"
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// We can't name our classes Data and DerivedData: those are in tst_qsharedpointer.cpp
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namespace NonTracked {
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class Data
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{
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public:
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static int destructorCounter;
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static int generationCounter;
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int generation;
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Data() : generation(++generationCounter)
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{ }
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virtual ~Data()
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{
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if (generation <= 0)
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qFatal("tst_qsharedpointer: Double deletion!");
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generation = 0;
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++destructorCounter;
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}
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};
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int Data::generationCounter = 0;
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int Data::destructorCounter = 0;
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class DerivedData: public Data
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{
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public:
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static int derivedDestructorCounter;
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int moreData;
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DerivedData() : moreData(0) { }
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~DerivedData() { ++derivedDestructorCounter; }
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};
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int DerivedData::derivedDestructorCounter = 0;
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#ifndef QTEST_NO_RTTI
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void dynamicCastFailureNoLeak()
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{
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Data::destructorCounter = DerivedData::derivedDestructorCounter = 0;
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// see QTBUG-28924
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QSharedPointer<Data> a(new Data);
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QSharedPointer<DerivedData> b = a.dynamicCast<DerivedData>();
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QVERIFY(!a.isNull());
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QVERIFY(b.isNull());
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a.clear();
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b.clear();
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QVERIFY(a.isNull());
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// verify that the destructors were called
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QCOMPARE(Data::destructorCounter, 1);
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QCOMPARE(DerivedData::derivedDestructorCounter, 0);
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}
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#endif
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} // namespace NonTracked
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