Crash in QWidgetPrivate::init on QApplication::quit() using a modal dialog on Mac

The problem was the order of deletion in the destructor. To autotest
this I create an application, start a modal dialog and then quit the
application.
The fix was contributed by a customer.

Task-number: QTBUG-12673
Reviewed-by: Olivier Goffart

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/auto/qapplication/tst_qapplication.cpp b/tests/auto/qapplication/tst_qapplication.cpp
index 1a38070dd5..91ae9214fd 100644
--- a/tests/auto/qapplication/tst_qapplication.cpp
+++ b/tests/auto/qapplication/tst_qapplication.cpp
@@ -146,6 +146,7 @@ private slots:
 
     void symbianNeedForTraps();
     void symbianLeaveThroughMain();
+    void qtbug_12673();
 };
 
 class EventSpy : public QObject
@@ -2239,6 +2240,23 @@ void tst_QApplication::symbianLeaveThroughMain()
 #endif
 }
 
+void tst_QApplication::qtbug_12673()
+{
+#ifdef Q_OS_SYMBIAN
+    QSKIP("This might not make sense in Symbian, but since I do not know how to test it I'll just skip it for now.", SkipAll);
+#else
+    QProcess testProcess;
+    QStringList arguments;
+#ifdef Q_OS_MAC
+    testProcess.start("modal/modal.app", arguments);
+#else
+    testProcess.start("modal/modal", arguments);
+#endif
+    QVERIFY(testProcess.waitForFinished(20000));
+    QCOMPARE(testProcess.exitStatus(), QProcess::NormalExit);
+#endif //  Q_OS_SYMBIAN
+}
+
 //QTEST_APPLESS_MAIN(tst_QApplication)
 int main(int argc, char *argv[])
 {