const math.MinInt64

5 uses

	math (current package)
		const.go#L51: 	MinInt64  = -1 << 63

	math/big
		float.go#L812: 			return math.MinInt64, acc
		float.go#L822: 			return math.MinInt64, Above

	go.uber.org/zap
		field.go#L36: 	_minTimeInt64 = time.Unix(0, math.MinInt64)

	google.golang.org/protobuf/types/known/durationpb
		duration.pb.go#L187: 			return time.Duration(math.MinInt64)