// only the owner P can CAS it to a valid G.
	runnext guintptr

	// Available G's (status == Gdead)
	gFree struct {
		gList
		n int32
	}

	sudogcache []*sudog
	sudogbuf   [128]*sudog

	// Cache of mspan objects from the heap.
	mspancache struct {
		// We need an explicit length here because this field is used
		// in allocation codepaths where write barriers are not allowed,

	// log.Logger's output goes through the handler.
	SetDefault(New(NewTextHandler(&slogbuf, &HandlerOptions{AddSource: true})))
	log.Print("msg2")
	checkLogOutput(t, slogbuf.String(), "time="+textTimeRE+` level=INFO source=.*logger_test.go:\d{3}"? msg=msg2`)

	// The default log.Logger always outputs at Info level.
	slogbuf.Reset()
	SetDefault(New(NewTextHandler(&slogbuf, &HandlerOptions{Level: LevelWarn})))
	log.Print("should not appear")