diff options
author | Sergio Martins <sergio.martins@kdab.com> | 2017-12-13 21:29:21 +0000 |
---|---|---|
committer | Sérgio Martins <sergio.martins@kdab.com> | 2017-12-19 23:03:42 +0000 |
commit | 17d231039b53c03e67d025f1f72bbd529e98fcbd (patch) | |
tree | 5148d6e6722c24fd5bcfa5a4da86479c1d7037d5 | |
parent | 77347a3699f8f236e1d440fb514ff8225ed5971b (diff) |
Don't crash with null receiver/context in new-style connects
old style connects have protection against null sender and null receiver,
but new style only had against null sender.
Change-Id: Ie555ac078412918e60c3b60830fe1f3abfb7f5af
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
-rw-r--r-- | src/corelib/kernel/qobject.cpp | 2 | ||||
-rw-r--r-- | tests/auto/corelib/kernel/qobject/tst_qobject.cpp | 11 |
2 files changed, 12 insertions, 1 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp index 3f50716cd7..086b8a51ba 100644 --- a/src/corelib/kernel/qobject.cpp +++ b/src/corelib/kernel/qobject.cpp @@ -4796,7 +4796,7 @@ QMetaObject::Connection QObjectPrivate::connectImpl(const QObject *sender, int s QtPrivate::QSlotObjectBase *slotObj, Qt::ConnectionType type, const int *types, const QMetaObject *senderMetaObject) { - if (!sender || !slotObj || !senderMetaObject) { + if (!sender || !receiver || !slotObj || !senderMetaObject) { qWarning("QObject::connect: invalid null parameter"); if (slotObj) slotObj->destroyIfLastRef(); diff --git a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp index 642d48d721..f1e58921c0 100644 --- a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp +++ b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp @@ -150,6 +150,7 @@ private slots: void deleteLaterInAboutToBlockHandler(); void mutableFunctor(); void checkArgumentsForNarrowing(); + void nullReceiver(); }; struct QObjectCreatedOnShutdown @@ -7380,6 +7381,16 @@ void tst_QObject::checkArgumentsForNarrowing() #undef FITS } +void tst_QObject::nullReceiver() +{ + QObject o; + QObject *nullObj = nullptr; // Passing nullptr directly doesn't compile with gcc 4.8 + QVERIFY(!connect(&o, &QObject::destroyed, nullObj, &QObject::deleteLater)); + QVERIFY(!connect(&o, &QObject::destroyed, nullObj, [] {})); + QVERIFY(!connect(&o, &QObject::destroyed, nullObj, Functor_noexcept())); + QVERIFY(!connect(&o, SIGNAL(destroyed()), nullObj, SLOT(deleteLater()))); +} + // Test for QtPrivate::HasQ_OBJECT_Macro Q_STATIC_ASSERT(QtPrivate::HasQ_OBJECT_Macro<tst_QObject>::Value); Q_STATIC_ASSERT(!QtPrivate::HasQ_OBJECT_Macro<SiblingDeleter>::Value); |