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
Change-Id: Id8bbbded39d8e58bcf0e8eedeb2dde794952333f
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
(cherry picked from commit b67cc148693de06370633cddf82a31664004e65c)

1 files changed, 2 insertions, 1 deletions

diff --git a/src/quicktemplates2/qquickstackview_p_p.h b/src/quicktemplates2/qquickstackview_p_p.h
index b687561c..91f74edc 100644
--- a/src/quicktemplates2/qquickstackview_p_p.h
+++ b/src/quicktemplates2/qquickstackview_p_p.h
@@ -72,6 +72,7 @@ public:
     }
 
     void warn(const QString &error);
+    void warnOfInterruption(const QString &attemptedOperation);
 
     void setCurrentItem(QQuickStackElement *element);
 
@@ -93,7 +94,7 @@ public:
     void depthChange(int newDepth, int oldDepth);
 
     bool busy = false;
-    bool removingElements = false;
+    bool modifyingElements = false;
     QString operation;
     QJSValue initialItem;
     QQuickItem *currentItem = nullptr;