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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
pragma Strict
import QtQml
QtObject {
id: self
property Component c: QtObject { objectName: "tracked" }
property QtObject hidden: c.createObject()
// Hands out the only remaining reference to "hidden", wrapped in a deeply
// nested map. While this function is running, the object is kept alive by
// the AOT-compiled function's tracked locals. Once it has returned, the
// returned value is in flight: it lives in coerceAndCall()'s buffer, which
// the garbage collector does not scan.
//
// The nesting matters. Converting the returned map to JS recurses once per
// level and allocates on every level, so a collector that runs during the
// conversion runs with plenty of C++ stack churn on top of the frame this
// function just vacated.
function takeHidden() : var {
var m = { o: hidden }
for (var i = 0; i < 300; ++i)
m = { n: m }
hidden = null
return m
}
}