Fix crash when barcount changed to 0 in bar series

Task-number: QTBUG-125158
Change-Id: Ib7b3f77df97d7e734a72da4760ef822b743e3996
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>

2 files changed, 3 insertions, 1 deletions

diff --git a/src/graphs2d/barchart/qbarseries.cpp b/src/graphs2d/barchart/qbarseries.cpp
index ca76ab9..eee9059 100644
--- a/src/graphs2d/barchart/qbarseries.cpp
+++ b/src/graphs2d/barchart/qbarseries.cpp
@@ -754,6 +754,7 @@ void QBarSeries::clear()
             QObject::disconnect(set, &QBarSet::update, this, &QBarSeries::update);
             delete set;
         }
+        emit update();
     }
 }
 
diff --git a/src/graphs2d/qsgrenderer/barsrenderer.cpp b/src/graphs2d/qsgrenderer/barsrenderer.cpp
index 4caa0e5..5b28140 100644
--- a/src/graphs2d/qsgrenderer/barsrenderer.cpp
+++ b/src/graphs2d/qsgrenderer/barsrenderer.cpp
@@ -448,10 +448,11 @@ void BarsRenderer::handlePolish(QBarSeries *series)
     int setCount = series->barSets().size();
     if (setCount == 0) {
         series->d_func()->clearLegendData();
+        m_rectNodesInputRects.clear();
+        m_seriesData.clear();
         return;
     }
 
-
     if (m_colorIndex < 0)
         m_colorIndex = m_graph->graphSeriesCount();
     m_graph->setGraphSeriesCount(m_colorIndex + setCount);