Resolves: tdf#92995 do not delete caption objects that are held by Undo

Drag&Drop Undo is a special case of ownership..

Change-Id: I2fe7769c4d84efe09d432335d5d8e72d506bf7a1

1 files changed, 8 insertions, 1 deletions

diff --git a/sc/source/ui/undo/undoblk.cxx b/sc/source/ui/undo/undoblk.cxx
index 1430a12df683..8748a7b473c5 100644
--- a/sc/source/ui/undo/undoblk.cxx
+++ b/sc/source/ui/undo/undoblk.cxx
@@ -1243,7 +1243,14 @@ void ScUndoDragDrop::DoUndo( ScRange aRange )
     // do not undo objects and note captions, they are handled via drawing undo
     InsertDeleteFlags nUndoFlags = (IDF_ALL & ~IDF_OBJECTS) | IDF_NOCAPTIONS;
 
-    rDoc.DeleteAreaTab( aRange, nUndoFlags );
+    // Additionally discard/forget caption ownership during deletion, as
+    // Drag&Drop is a special case in that the Undo holds captions of the
+    // transfered target range, which would get deleted and
+    // SdrGroupUndo::Undo() would attempt to access invalidated captions and
+    // crash, tdf#92995
+    InsertDeleteFlags nDelFlags = nUndoFlags | IDF_FORGETCAPTIONS;
+
+    rDoc.DeleteAreaTab( aRange, nDelFlags );
     pRefUndoDoc->CopyToDocument( aRange, nUndoFlags, false, &rDoc );
     if ( rDoc.HasAttrib( aRange, HASATTR_MERGED ) )
         rDoc.ExtendMerge( aRange, true );