1 files changed, 9 insertions, 3 deletions
diff --git a/src/widgets/itemviews/qcolumnview.cpp b/src/widgets/itemviews/qcolumnview.cpp
index 5c317bbb0c..92bbdf6b69 100644
--- a/src/widgets/itemviews/qcolumnview.cpp
+++ b/src/widgets/itemviews/qcolumnview.cpp
@@ -861,11 +861,15 @@ void QColumnView::setColumnWidths(const QList<int> &list)
 {
     Q_D(QColumnView);
     int i = 0;
-    for (; (i < list.count() && i < d->columns.count()); ++i) {
+    const int listCount = list.count();
+    const int count = qMin(listCount, d->columns.count());
+    for (; i < count; ++i) {
         d->columns.at(i)->resize(list.at(i), d->columns.at(i)->height());
         d->columnSizes[i] = list.at(i);
     }
-    for (; i < list.count(); ++i)
+
+    d->columnSizes.reserve(listCount);
+    for (; i < listCount; ++i)
         d->columnSizes.append(list.at(i));
 }
 
@@ -878,7 +882,9 @@ QList<int> QColumnView::columnWidths() const
 {
     Q_D(const QColumnView);
     QList<int> list;
-    for (int i = 0; i < d->columns.count(); ++i)
+    const int columnCount = d->columns.count();
+    list.reserve(columnCount);
+    for (int i = 0; i < columnCount; ++i)
         list.append(d->columnSizes.at(i));
     return list;
 }