Fix crash in QQuickCanvasItem::updatePaintNode()

QQuickCanvasItem manages the life time of the texture
already, so it shouldn't set the ownsTexture flag on the
QSGSimpleTextureNode, because that would result in a double deletion
when QSGSimpleTextureNode::setTexture() is called.

Change-Id: I7c1cc949b664d1a8b64bab092250439171e66233
Task-number: QTBUG-47714
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp
index cb694c499a..75507c68d2 100644
--- a/src/quick/items/context2d/qquickcanvasitem.cpp
+++ b/src/quick/items/context2d/qquickcanvasitem.cpp
@@ -57,7 +57,11 @@ class QQuickCanvasNode : public QSGSimpleTextureNode
 public:
     QQuickCanvasNode() {
         qsgnode_set_description(this, QStringLiteral("canvasnode"));
-        setOwnsTexture(true);
+        setOwnsTexture(false);
+    }
+
+    ~QQuickCanvasNode() {
+        delete texture();
     }
 };