t.Errorf("ZoneBounds of %v expects end is zero Time, got:\n  start=%v\n  end=%v", foreverTime, start, end)
	}

	// Check some real-world cases to make sure we're getting the right bounds.
	boundOne := Date(1990, September, 16, 1, 0, 0, 0, loc)
	boundTwo := Date(1991, April, 14, 3, 0, 0, 0, loc)
	boundThree := Date(1991, September, 15, 1, 0, 0, 0, loc)
	makeLocalTime := func(sec int64) Time { return Unix(sec, 0) }

	MOVD	$1986, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1987, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1988, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1989, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1990, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1991, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1992, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1993, R12
	B	runtime·callbackasm1(SB)
	MOVD	$1994, R12

	MOVW	$1986, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1987, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1988, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1989, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1990, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1991, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1992, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1993, R12
	B	runtime·callbackasm1(SB)
	MOVW	$1994, R12