Use QSharedMemory(const QNativeIpcKey &key) constructor to port away from the deprecated QSharedMemory(const QString &) constructor. Task-number: QTBUG-108858 Pick-to: 6.6 Change-Id: I05615100f77f571fe32a3cf627c3df46baaa7f7a Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>