From a7564e2657dcbd2f69c357d7c49c9326a23ee021 Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Mon, 12 Jul 2021 11:15:44 +0200
Subject: QDuplicateTracker: accept the number of elements to reserve as a ctor
 argument
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This prevents us from first reserve()ing Prealloc elements, and then
possibly reserve()ing a larger number, which leaves the first bucket
list's memory unused.

Consequently, deprecate reserve().

Change-Id: Ifc0a5a021097f4589557e7b5e45d9d0892797ade
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
---
 src/widgets/itemviews/qtreewidget.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/widgets/itemviews')

diff --git a/src/widgets/itemviews/qtreewidget.cpp b/src/widgets/itemviews/qtreewidget.cpp
index b684282e9d..b9af2ce8af 100644
--- a/src/widgets/itemviews/qtreewidget.cpp
+++ b/src/widgets/itemviews/qtreewidget.cpp
@@ -3101,8 +3101,7 @@ QList<QTreeWidgetItem*> QTreeWidget::selectedItems() const
     const QModelIndexList indexes = selectionModel()->selectedIndexes();
     QList<QTreeWidgetItem*> items;
     items.reserve(indexes.count());
-    QDuplicateTracker<QTreeWidgetItem *> seen;
-    seen.reserve(indexes.count());
+    QDuplicateTracker<QTreeWidgetItem *> seen(indexes.count());
     for (const auto &index : indexes) {
         QTreeWidgetItem *item = d->item(index);
         if (item->isHidden() || seen.hasSeen(item))
-- 
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