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| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||
| 0001263 | [uClibc] Standards Compliance | major | always | 03-07-07 11:55 | 01-05-08 17:00 | ||||
| Reporter | mikevoyt | View Status | public | ||||||
| Assigned To | uClibc | ||||||||
| Priority | normal | Resolution | no change required | ||||||
| Status | closed | Product Version | 0.9.28.1 | ||||||
| Summary | 0001263: Daylight Saving Time (DST) doesn't end at the correct time for the US | ||||||||
| Description |
There are new rules in 2007 for Daylight Saving Time. Daylight Saving Time for 2007 beings at 2AM on 3/11, and ends at 2AM on 11/4. uClibc will start DST at the correct date/time; but it will not end at the correct time. The following test case illustrates the bug: # date -u -s 031109592007 ; date ; sleep 70 ; date Sun Mar 11 09:59:00 UTC 2007 Sun Mar 11 01:59:00 PST 2007 Sun Mar 11 03:00:10 PDT 2007 <---- GOOD: jumps an hour ahead # date -u -s 110409592007 ; date ; sleep 70 ; date Sun Nov 4 09:59:00 UTC 2007 Sun Nov 4 01:59:00 PST 2007 Sun Nov 4 02:00:10 PST 2007 <----- BAD: it should be 1:00:10 !!! |
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Notes |
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(0002353) lubek 05-10-07 07:50 |
Interestingly, the error occurs only when setting the date with -u: export TZ="PST8PDT"; date -s 110401592007; date; sleep 70; date Sun Nov 4 01:59:00 PDT 2007 Sun Nov 4 01:59:00 PDT 2007 Sun Nov 4 01:00:10 PST 2007 The short TZ form was used to show that the new rules are in effect. |
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(0002857) JohnAta 10-22-07 15:03 |
The submitter's example does not show an error in DST processing. When setting the time, it was set to 1:59 PST which is an hour late since standard time has already been entered. This is because when Daylight Savings ends, time backs up an hour and repeats itself in the standard time zone so between 1 and 2, there can be two specifications: one in daylight savings and the other in standard time. So the example originally given behaved correctly in that since time had already gone back to standard time, there is no rollback pending between 1:59 PST and 2:00 PST. The example should have set the time an hour earlier like: # date -u -s 110408592007 ; date ; sleep 70 ; date Sun Nov 4 08:59:00 UTC 2007 Sun Nov 4 01:59:00 PDT 2007 Sun Nov 4 01:00:10 PST 2007 |
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Issue History |
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| Date Modified | Username | Field | Change |
| 03-07-07 11:55 | mikevoyt | New Issue | |
| 03-07-07 11:55 | mikevoyt | Status | new => assigned |
| 03-07-07 11:55 | mikevoyt | Assigned To | => uClibc |
| 05-10-07 07:50 | lubek | Note Added: 0002353 | |
| 10-22-07 15:03 | JohnAta | Note Added: 0002857 | |
| 10-22-07 15:04 | JohnAta | Issue Monitored: JohnAta | |
| 01-05-08 17:00 | vapier | Status | assigned => closed |
| 01-05-08 17:00 | vapier | Resolution | open => no change required |
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