1 files changed, 32 insertions, 0 deletions
diff --git a/sc/source/core/data/segmenttree.cxx b/sc/source/core/data/segmenttree.cxx
index 254f0f875571..5d7adc18df87 100644
--- a/sc/source/core/data/segmenttree.cxx
+++ b/sc/source/core/data/segmenttree.cxx
@@ -24,6 +24,7 @@
 #include <algorithm>
 #include <limits>
 #include <address.hxx>
+#include <global.hxx>
 
 using ::std::numeric_limits;
 
@@ -66,6 +67,8 @@ public:
         mbTreeSearchEnabled = b;
     }
 
+    void makeReady();
+
 private:
     typedef ::mdds::flat_segment_tree<SCCOLROW, ValueType> fst_type;
     fst_type maSegments;
@@ -131,7 +134,10 @@ typename ScFlatSegmentsImpl<ValueType_, ExtValueType_>::ValueType ScFlatSegments
     }
 
     if (!maSegments.is_tree_valid())
+    {
+        assert(!ScGlobal::bThreadedGroupCalcInProgress);
         maSegments.build_tree();
+    }
 
     maSegments.search_tree(nPos, nValue);
     return nValue;
@@ -185,7 +191,10 @@ bool ScFlatSegmentsImpl<ValueType_, ExtValueType_>::getRangeData(SCCOLROW nPos,
         return getRangeDataLeaf(nPos, rData);
 
     if (!maSegments.is_tree_valid())
+    {
+        assert(!ScGlobal::bThreadedGroupCalcInProgress);
         maSegments.build_tree();
+    }
 
     if (!maSegments.search_tree(nPos, rData.mnValue, &rData.mnPos1, &rData.mnPos2).second)
         return false;
@@ -267,6 +276,14 @@ bool ScFlatSegmentsImpl<ValueType_, ExtValueType_>::getNext(RangeData& rData)
     return true;
 }
 
+template<typename ValueType_, typename ExtValueType_>
+void ScFlatSegmentsImpl<ValueType_, ExtValueType_>::makeReady()
+{
+    assert(!ScGlobal::bThreadedGroupCalcInProgress);
+    if (!maSegments.is_tree_valid())
+        maSegments.build_tree();
+}
+
 class ScFlatUInt16SegmentsImpl : public ScFlatSegmentsImpl<sal_uInt16, sal_uInt32>
 {
 public:
@@ -416,6 +433,11 @@ SCROW ScFlatBoolRowSegments::findLastTrue() const
     return mpImpl->findLastTrue(false);
 }
 
+void ScFlatBoolRowSegments::makeReady()
+{
+    mpImpl->makeReady();
+}
+
 ScFlatBoolColSegments::ScFlatBoolColSegments(SCCOL nMaxCol) :
     mpImpl(new ScFlatBoolSegmentsImpl(nMaxCol))
 {
@@ -462,6 +484,11 @@ void ScFlatBoolColSegments::insertSegment(SCCOL nCol, SCCOL nSize)
     mpImpl->insertSegment(static_cast<SCCOLROW>(nCol), static_cast<SCCOLROW>(nSize), true/*bSkipStartBoundary*/);
 }
 
+void ScFlatBoolColSegments::makeReady()
+{
+    mpImpl->makeReady();
+}
+
 ScFlatUInt16RowSegments::ForwardIterator::ForwardIterator(ScFlatUInt16RowSegments& rSegs) :
     mrSegs(rSegs), mnCurPos(0), mnLastPos(-1), mnCurValue(0)
 {
@@ -554,4 +581,9 @@ void ScFlatUInt16RowSegments::setValueIf(SCROW nRow1, SCROW nRow2, sal_uInt16 nV
     mpImpl->setValueIf(static_cast<SCCOLROW>(nRow1), static_cast<SCCOLROW>(nRow2), nValue, rPredicate);
 }
 
+void ScFlatUInt16RowSegments::makeReady()
+{
+    mpImpl->makeReady();
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */