Autotest: make sure we can't create QWeakPointer from a QObject in destruction.

This test only works in debug mode

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/auto/qsharedpointer/tst_qsharedpointer.cpp b/tests/auto/qsharedpointer/tst_qsharedpointer.cpp
index 6bc3aa0..58e5401 100644
--- a/tests/auto/qsharedpointer/tst_qsharedpointer.cpp
+++ b/tests/auto/qsharedpointer/tst_qsharedpointer.cpp
@@ -1593,6 +1593,21 @@ void tst_QSharedPointer::invalidConstructs_data()
         << "QObject *ptr = new QObject;\n"
            "QWeakPointer<QObject> weak = ptr;\n"    // this makes the object unmanaged
            "QSharedPointer<QObject> shared(ptr);\n";
+
+#ifndef QT_NO_DEBUG
+    // this tests a Q_ASSERT, so it is only valid in debug mode
+    // the DerivedFromQObject destructor below creates a QWeakPointer from parent().
+    // parent() is not 0 in the current Qt implementation, but has started destruction,
+    // so the code should detect that issue
+    QTest::newRow("shared-pointer-from-qobject-in-destruction")
+        << &QTest::QExternalTest::tryRunFail
+        << "class DerivedFromQObject: public QObject { public:\n"
+           "    DerivedFromQObject(QObject *parent): QObject(parent) {}\n"
+           "    ~DerivedFromQObject() { QWeakPointer<QObject> weak = parent(); }\n"
+           "};\n"
+           "QObject obj;\n"
+           "new DerivedFromQObject(&obj);";
+#endif
 }
 
 void tst_QSharedPointer::invalidConstructs()