sp := stringStructOf(&s)
	rp.array = sp.str
	rp.len = sp.len
	rp.cap = sp.len
	return
}

var (
	// printBacklog is a circular buffer of messages written with the builtin
	// print* functions, for use in postmortem analysis of core dumps.
	printBacklog      [512]byte
	printBacklogIndex int
)

// recordForPanic maintains a circular buffer of messages written by the