tst_QTimer: suppress the cross-thread timer stopping warnings

Both QTimer's and QObjectPrivate's destructors print a warning if the
current object lives on another thread and has an active timer:

QWARN  : tst_QTimer::moveToThread() QObject::killTimer: Timers cannot be stopped from another thread
QWARN  : tst_QTimer::moveToThread() QObject::~QObject: Timers cannot be stopped from another thread

This timer is used to ask the thread to quit, which in turn allows us to
destroy this QObject without a cross-thread warning. Because it's
already fired once and done its duty, we can make sure it's not active
by simply making it single-shot.

Pick-to: 6.4 6.5
Change-Id: Ieec322d73c1e40ad95c8fffd17465067b27c044b
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp b/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
index 15e08a50a2..e2bde37a7e 100644
--- a/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
+++ b/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
@@ -512,6 +512,7 @@ void tst_QTimer::moveToThread()
 #endif
     QTimer ti1;
     QTimer ti2;
+    ti1.setSingleShot(true);
     ti1.start(MOVETOTHREAD_TIMEOUT);
     ti2.start(MOVETOTHREAD_TIMEOUT);
     QVERIFY((ti1.timerId() & 0xffffff) != (ti2.timerId() & 0xffffff));