fdo#77300: Do the same for the shared formula case as well.

Change-Id: I560b0beabe81907e3f85d8845041a9df25d2200d

sc/source/core/data/column4.cxx

@@ -637,23 +637,26 @@ public:
             ScFormulaCell* pTop = *rEntry.mpCells;
             OUString aFormula = pTop->GetHybridFormula();
 
-            // Create a new token array from the hybrid formula string, and
-            // set it to the group.
-            ScCompiler aComp(mrCompileFormulaCxt, pTop->aPos);
-            ScTokenArray* pNewCode = aComp.CompileString(aFormula);
-            ScFormulaCellGroupRef xGroup = pTop->GetCellGroup();
-            assert(xGroup);
-            xGroup->setCode(pNewCode);
-            xGroup->compileCode(*mpDoc, pTop->aPos, mpDoc->GetGrammar());
-
-            // Propagate the new token array to all formula cells in the group.
-            ScFormulaCell** pp = rEntry.mpCells;
-            ScFormulaCell** ppEnd = pp + rEntry.mnLength;
-            for (; pp != ppEnd; ++pp)
+            if (!aFormula.isEmpty())
             {
-                ScFormulaCell* p = *pp;
-                p->SyncSharedCode();
-                p->SetDirty();
+                // Create a new token array from the hybrid formula string, and
+                // set it to the group.
+                ScCompiler aComp(mrCompileFormulaCxt, pTop->aPos);
+                ScTokenArray* pNewCode = aComp.CompileString(aFormula);
+                ScFormulaCellGroupRef xGroup = pTop->GetCellGroup();
+                assert(xGroup);
+                xGroup->setCode(pNewCode);
+                xGroup->compileCode(*mpDoc, pTop->aPos, mpDoc->GetGrammar());
+
+                // Propagate the new token array to all formula cells in the group.
+                ScFormulaCell** pp = rEntry.mpCells;
+                ScFormulaCell** ppEnd = pp + rEntry.mnLength;
+                for (; pp != ppEnd; ++pp)
+                {
+                    ScFormulaCell* p = *pp;
+                    p->SyncSharedCode();
+                    p->SetDirty();
+                }
             }
         }
         else