func disablePlatformSources() (undo func()) {
	platformZoneSources = nil
	return func() {
		platformZoneSources = origPlatformZoneSources
	}
}

var Interrupt = interrupt
var DaysIn = daysIn

func empty(arg any, seq uintptr, delta int64) {}

// Test that a runtimeTimer with a period that would overflow when on
// expiration does not throw or cause other timers to hang.
//

		return Time{}, false
	}
	year := parseUint(s[0:4], 0, 9999)                       // e.g., 2006
	month := parseUint(s[5:7], 1, 12)                        // e.g., 01
	day := parseUint(s[8:10], 1, daysIn(Month(month), year)) // e.g., 02
	hour := parseUint(s[11:13], 0, 23)                       // e.g., 15
	min := parseUint(s[14:16], 0, 59)                        // e.g., 04

	if i < 0 {
		i += 7
	}
	day += i
	if week := int(d.Day) - 1; week < 4 {
		day += week * 7
	} else {
		// "Last" instance of the day.
		day += 4 * 7
		if day > daysIn(Month(d.Month), year) {
			day -= 7
		}
	}
	return t.sec() + int64(day-1)*secondsPerDay + internalToUnix
}

func initLocalFromTZI(i *syscall.Timezoneinformation) {
	l := &localLoc

				time, t1)
		}
	}
}

var daysInTests = []struct {
	year, month, di int
}{
	{2011, 1, 31},  // January, first month, 31 days
	{2011, 2, 28},  // February, non-leap year, 28 days
	{2012, 2, 29},  // February, leap year, 29 days
	{2011, 6, 30},  // June, 30 days
	{2011, 12, 31}, // December, last month, 31 days
}

func TestDaysIn(t *testing.T) {

		}
		// Now dow is the day-of-week of the first day of r.mon.
		// Get the day-of-month of the first "dow" day.
		d := r.day - dow
		if d < 0 {
			d += 7
		}
		for i := 1; i < r.week; i++ {
			if d+7 >= daysIn(Month(r.mon), year) {
				break
			}
			d += 7
		}
		d += int(daysBefore[r.mon-1])
		if isLeap(year) && r.mon > 2 {
			d++
		}
		s = d * secondsPerDay
	}

	return s + r.time - off

}

func daysIn(m Month, year int) int {
	if m == February && isLeap(year) {
		return 29
	}
	return int(daysBefore[m] - daysBefore[m-1])
}

// daysSinceEpoch takes a year and returns the number of days from
// the absolute epoch to the start of that year.
// This is basically (year - zeroYear) * 365, but accounting for leap days.
func daysSinceEpoch(year int) uint64 {

		}
		day = d
	} else {
		if month < 0 {
			month = int(January)
		}
		if day < 0 {
			day = 1
		}
	}

	// Validate the day of the month.
	if day < 1 || day > daysIn(Month(month), year) {
		return Time{}, newParseError(alayout, avalue, "", value, ": day out of range")
	}

	if z != nil {
		return Date(year, Month(month), day, hour, min, sec, nsec, z), nil
	}

			inputXML: `<Expiration>
                                    <Days>3</Days>
                                    <Date>2019-04-20T00:00:00Z</Date>
                                    </Expiration>`,
			expectedErr: errLifecycleInvalidExpiration,
		},
		{ // Expiration with both ExpiredObjectDeleteMarker and days
			inputXML: `<Expiration>
                                    <Days>3</Days>

            This issue is stale because it has been open for 7 days with no activity.
            It will be closed if no further activity occurs. Thank you.
          close-issue-message: >
            This issue was closed because it has been inactive for 7 days since being marked as stale.
            Please reopen if you'd like to work on this further.
          days-before-pr-stale: 14
          days-before-pr-close: 14

}

// TransitionDays is a type alias to unmarshal Days in Transition
type TransitionDays int

// UnmarshalXML parses number of days from Transition and validates if
// >= 0
func (tDays *TransitionDays) UnmarshalXML(d *xml.Decoder, startElement xml.StartElement) error {
	var days int
	err := d.DecodeElement(&days, &startElement)
	if err != nil {
		return err
	}

	if days < 0 {
		return errTransitionInvalidDays
	}