Prevent division by zero

Fixes: QTBUG-91347
Change-Id: Ice76d050c47fa141749b77a0313c2f070151bbc1
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
(cherry picked from commit ee774a0052ccd56994d6c5008ebb7469da1d87f8)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 8 insertions, 6 deletions

diff --git a/src/datavisualization/data/surfaceitemmodelhandler.cpp b/src/datavisualization/data/surfaceitemmodelhandler.cpp
index 59bbd4b4..271fa299 100644
--- a/src/datavisualization/data/surfaceitemmodelhandler.cpp
+++ b/src/datavisualization/data/surfaceitemmodelhandler.cpp
@@ -313,12 +313,14 @@ void SurfaceItemModelHandler::resolveModel()
             for (int j = 0; j < columnList.size(); j++) {
                 QVector3D &itemPos = itemValueMap[rowKey][columnList.at(j)];
                 if (cumulative) {
-                    if (average) {
-                        itemPos /= float((*matchCountMap)[rowKey][columnList.at(j)]);
-                    } else { // cumulativeY
-                        float divisor = float((*matchCountMap)[rowKey][columnList.at(j)]);
-                        itemPos.setX(itemPos.x() / divisor);
-                        itemPos.setZ(itemPos.z() / divisor);
+                    float divisor = float((*matchCountMap)[rowKey][columnList.at(j)]);
+                    if (divisor) {
+                        if (average) {
+                            itemPos /= divisor;
+                        } else { // cumulativeY
+                            itemPos.setX(itemPos.x() / divisor);
+                            itemPos.setZ(itemPos.z() / divisor);
+                        }
                     }
                 }
                 newProxyRow[j].setPosition(itemPos);