}
		first = false
	})
}

type funcWriter struct {
	write func([]byte) (int, error)
}

func (fw *funcWriter) Write(b []byte) (int, error) {
	return fw.write(b)
}

func TestRacyOutput(t *T) {
	var runs int32  // The number of running Writes
	var races int32 // Incremented for each race detected
	raceDetector := func(b []byte) (int, error) {