ab53b12931
We should not use defaulted arguments of non-trivial type, because their construction and destruction, even if not passed, is repeated at every call site, producing O(n) executable code. By overloading out-of-line, we execute the same code at runtime, but we have only one copy of the arg construction and destruction, in the library, O(1) executable code production. Found in API-review of QAccessibleWidgetV2. Amends the start of the public history. Can't pick further than (unreleased) 6.10, because this adds a new symbol. Pick-to: 6.10 Task-number: QTBUG-98117 Change-Id: I705bca764992d9e7a2aa1021e0f94006b6817177 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>