Merge remote-tracking branch 'origin/5.13' into 5.14

 Conflicts:
	src/corelib/serialization/qjson_p.h

Change-Id: I83cea141a4de8b3998478bfded84ca9029f7a2a9

1 files changed, 7 insertions, 1 deletions

diff --git a/src/plugins/platforms/xcb/qxcbdrag.cpp b/src/plugins/platforms/xcb/qxcbdrag.cpp
index 1ce947165d..3d525598ca 100644
--- a/src/plugins/platforms/xcb/qxcbdrag.cpp
+++ b/src/plugins/platforms/xcb/qxcbdrag.cpp
@@ -354,6 +354,11 @@ bool QXcbDrag::findXdndAwareTarget(const QPoint &globalPos, xcb_window_t *target
 
 void QXcbDrag::move(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
 {
+    // currentDrag() might be deleted while 'drag' is progressing
+    if (!currentDrag()) {
+        cancel();
+        return;
+    }
     // The source sends XdndEnter and XdndPosition to the target.
     if (source_sameanswer.contains(globalPos) && source_sameanswer.isValid())
         return;
@@ -1076,7 +1081,8 @@ void QXcbDrag::cancel()
         send_leave();
 
     // remove canceled object
-    currentDrag()->deleteLater();
+    if (currentDrag())
+        currentDrag()->deleteLater();
 
     canceled = true;
 }