StackView: fix heap-use-after-free when pushing after clear

This patch extends the work done in aaec25a7 to cover all operations.

Note also that b94889f4 does a similar thing to this patch and
aaec25a7, in that it explicitly ignores operations that are done during
the removal of elements.

Fixes: QTBUG-84381
Pick-to: 5.15
Change-Id: Id8bbbded39d8e58bcf0e8eedeb2dde794952333f
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/quicktemplates2/qquickstackview_p_p.h b/src/quicktemplates2/qquickstackview_p_p.h
index b76a033c71..0c64019db8 100644
--- a/src/quicktemplates2/qquickstackview_p_p.h
+++ b/src/quicktemplates2/qquickstackview_p_p.h
@@ -73,6 +73,7 @@ public:
     }
 
     void warn(const QString &error);
+    void warnOfInterruption(const QString &attemptedOperation);
 
     void setCurrentItem(QQuickStackElement *element);
 
@@ -94,7 +95,7 @@ public:
     void depthChange(int newDepth, int oldDepth);
 
     bool busy = false;
-    bool removingElements = false;
+    bool modifyingElements = false;
     QString operation;
     QJSValue initialItem;
     QQuickItem *currentItem = nullptr;