tailuevar   []int32
	initialized bool
}

// shouldTrack reports whether the liveness analysis
// should track the variable n.
// We don't care about variables that have no pointers,
// nor do we care about non-local variables,
// nor do we care about empty structs (handled by the pointer check),
// nor do we care about the fake PAUTOHEAP variables.
func shouldTrack(n *ir.Name) bool {

// - input entry is not of the type *madmin.TraceInfo*
// - errOnly entries are to be traced, not status code 2xx, 3xx.
// - madmin.TraceInfo type is asked by opts
func shouldTrace(trcInfo madmin.TraceInfo, opts madmin.ServiceTraceOpts) (shouldTrace bool) {
	// Reject all unwanted types.
	want := opts.TraceTypes()
	if !want.Contains(trcInfo.TraceType) {
		return false
	}

	// Use buffered channel to take care of burst sends or slow w.Write()
	err = globalTrace.SubscribeJSON(traceOpts.TraceTypes(), out, ctx.Done(), func(entry madmin.TraceInfo) bool {
		return shouldTrace(entry, traceOpts)
	}, &wg)
	if err != nil {
		return grid.NewRemoteErr(err)
	}

	// Publish bootstrap events that have already occurred before client could subscribe.