fdo#81617: Split formula groups at sort range boundaries.

Otherwise, partially sorting a range may crash, or at best incorrectly
update formula references.

Change-Id: Iefcb86d205d83ccc5b684048bfd9aadabf6e13eb

sc/inc/table.hxx

@@ -884,6 +884,7 @@ public:
     formula::FormulaTokenRef ResolveStaticReference( SCCOL nCol1, SCROW nRow1, SCCOL nCol2, SCROW nRow2 );
     formula::VectorRefArray FetchVectorRefArray( SCCOL nCol, SCROW nRow1, SCROW nRow2 );
 
+    void SplitFormulaGroups( SCCOL nCol, std::vector<SCROW>& rRows );
     void UnshareFormulaCells( SCCOL nCol, std::vector<SCROW>& rRows );
     void RegroupFormulaCells( SCCOL nCol );
 

sc/source/core/data/table3.cxx

@@ -751,6 +751,14 @@ void ScTable::SortReorderByRow(
     ScSortInfoArray::RowsType* pRows = pArray->GetDataRows();
     assert(pRows); // In sort-by-row mode we must have data rows already populated.
 
+    // Split formula groups at the sort range boundaries (if applicable).
+    std::vector<SCROW> aRowBounds;
+    aRowBounds.reserve(2);
+    aRowBounds.push_back(nRow1);
+    aRowBounds.push_back(nRow2+1);
+    for (SCCOL nCol = nCol1; nCol <= nCol2; ++nCol)
+        SplitFormulaGroups(nCol, aRowBounds);
+
     // Cells in the data rows only reference values in the document. Make
     // a copy before updating the document.
 

sc/source/core/data/table7.cxx

@@ -118,6 +118,14 @@ bool ScTable::HasUniformRowHeight( SCROW nRow1, SCROW nRow2 ) const
     return nRow2 <= aData.mnRow2;
 }
 
+void ScTable::SplitFormulaGroups( SCCOL nCol, std::vector<SCROW>& rRows )
+{
+    if (!ValidCol(nCol))
+        return;
+
+    sc::SharedFormulaUtil::splitFormulaCellGroups(aCol[nCol].maCells, rRows);
+}
+
 void ScTable::UnshareFormulaCells( SCCOL nCol, std::vector<SCROW>& rRows )
 {
     if (!ValidCol(nCol))