p := getg().m.p.ptr()
	p.scannedStackSize += uint64(scannedSize)
	p.scannedStacks++

	if isShrinkStackSafe(gp) {
		// Shrink the stack if not much of it is being used.
		shrinkstack(gp)
	} else {
		// Otherwise, shrink the stack at the next sync safe point.
		gp.preemptShrink = true
	}

	var state stackScanState
	state.stack = gp.stack

	if stackTraceDebug {