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