fdo#72774: Generate correct group items for the year group.

This changes bring it back to the same algorithm used in 3.5.

Change-Id: I16855cef1de133a1f886baa823d5b0d2b148e781

sc/inc/dputil.hxx

@@ -45,7 +45,7 @@ public:
         SvNumberFormatter* pFormatter);
 
     static sal_Int32 getDatePartValue(
-        double fValue, const ScDPNumGroupInfo& rInfo, sal_Int32 nDatePart,
+        double fValue, const ScDPNumGroupInfo* pInfo, sal_Int32 nDatePart,
         SvNumberFormatter* pFormatter);
 
     static OUString getDisplayedMeasureName(const OUString& rName, ScSubTotalFunc eFunc);

sc/source/core/data/dpdimsave.cxx

@@ -337,8 +337,8 @@ void fillDateGroupDimension(
     {
         case sheet::DataPilotFieldGroupBy::YEARS:
             nStart = ScDPUtil::getDatePartValue(
-                fSourceMin, rDateInfo, sheet::DataPilotFieldGroupBy::YEARS, pFormatter);
-            nEnd = ScDPUtil::getDatePartValue(fSourceMax, rDateInfo, sheet::DataPilotFieldGroupBy::YEARS, pFormatter);
+                fSourceMin, NULL, sheet::DataPilotFieldGroupBy::YEARS, pFormatter);
+            nEnd = ScDPUtil::getDatePartValue(fSourceMax, NULL, sheet::DataPilotFieldGroupBy::YEARS, pFormatter);
             break;
         case sheet::DataPilotFieldGroupBy::QUARTERS: nStart = 1; nEnd = 4;   break;
         case sheet::DataPilotFieldGroupBy::MONTHS:   nStart = 1; nEnd = 12;  break;

sc/source/core/data/dpgroup.cxx

@@ -911,7 +911,7 @@ void ScDPGroupTableData::FillGroupValues(vector<SCROW>& rItems, const vector<lon
             {
                 SvNumberFormatter* pFormatter = pDoc->GetFormatTable();
                 sal_Int32 nPartValue = ScDPUtil::getDatePartValue(
-                    pData->GetValue(), *pNumInfo, nDatePart, pFormatter);
+                    pData->GetValue(), pNumInfo, nDatePart, pFormatter);
 
                 ScDPItemData aItem(nDatePart, nPartValue);
                 rItems[i] = pCache->GetIdByItemData(nColumn, aItem);

sc/source/core/data/dputil.cxx

@@ -290,16 +290,19 @@ OUString ScDPUtil::getNumGroupName(
 }
 
 sal_Int32 ScDPUtil::getDatePartValue(
-    double fValue, const ScDPNumGroupInfo& rInfo, sal_Int32 nDatePart,
+    double fValue, const ScDPNumGroupInfo* pInfo, sal_Int32 nDatePart,
     SvNumberFormatter* pFormatter)
 {
     // Start and end are inclusive
     // (End date without a time value is included, with a time value it's not)
 
-    if (fValue < rInfo.mfStart && !rtl::math::approxEqual(fValue, rInfo.mfStart))
-        return ScDPItemData::DateFirst;
-    if (fValue > rInfo.mfEnd && !rtl::math::approxEqual(fValue, rInfo.mfEnd))
-        return ScDPItemData::DateLast;
+    if (pInfo)
+    {
+        if (fValue < pInfo->mfStart && !rtl::math::approxEqual(fValue, pInfo->mfStart))
+            return ScDPItemData::DateFirst;
+        if (fValue > pInfo->mfEnd && !rtl::math::approxEqual(fValue, pInfo->mfEnd))
+            return ScDPItemData::DateLast;
+    }
 
     sal_Int32 nResult = 0;