https://bugreports.qt.io/browse/QTBUG-129622
https://bugs.kde.org/show_bug.cgi?id=493854
https://codereview.qt-project.org/c/qt/qtdeclarative/+/598853
--- a/src/quick/items/qquickitemview.cpp
+++ b/src/quick/items/qquickitemview.cpp
@@ -2481,5 +2481,7 @@
                 QQuickItemPrivate::get(item->item)->setCulled(true);
             }
-            if (!isClearing)
+            // If deleteLater was called, the item isn't long for this world and so we shouldn't store references to it.
+            // This can happen when a Repeater is used to populate items in SwipeView's ListView contentItem.
+            if (!isClearing && !QObjectPrivate::get(item->item)->deleteLaterCalled)
                 unrequestedItems.insert(item->item, model->indexOf(item->item, q));
         } else if (flags & QQmlInstanceModel::Destroyed) {
--- a/tests/auto/quickcontrols/controls/data/tst_swipeview.qml
+++ b/tests/auto/quickcontrols/controls/data/tst_swipeview.qml
@@ -5,4 +5,5 @@
 import QtTest
 import QtQuick.Controls
+import QtQuick.Layouts
 
 TestCase {
@@ -761,3 +762,61 @@
         compare(item2.x, swipeListView.width)
     }
+
+    Component {
+        id: zeroSizeSwipeViewWithRepeatersComponent
+
+        Item {
+            objectName: "rootItem"
+            anchors.fill: parent
+
+            property alias swipeView: swipeView
+            property int d
+
+            Timer {
+                interval: 2
+                running: true
+                repeat: false
+                onTriggered: d = 2
+            }
+
+            SwipeView {
+                id: swipeView
+                contentItem.objectName: "swipeViewListView"
+
+                Repeater {
+                    objectName: "swipeViewContentItemRepeater"
+                    model: [
+                        {
+                            title: d
+                        }
+                    ]
+
+                    delegate: GridLayout {
+                        objectName: "gridLayoutDelegate"
+
+                        Repeater {
+                            id: repeater
+                            objectName: "delegateRepeater"
+                            model: d
+                            delegate: Item {
+                                objectName: "delegate" + index
+
+                                required property int index
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // QTBUG-129622
+    function test_zeroSizeSwipeViewWithRepeaters() {
+        let root = createTemporaryObject(zeroSizeSwipeViewWithRepeatersComponent, testCase)
+        verify(root)
+
+        let swipeView = root.swipeView
+        tryCompare(root, "d", 2)
+        // Shouldn't crash when the model is changed.
+    }
 }