605875 - when running jsreftests on a tegra, I get 45 tests that fail and are Date() related because tests don't work when timezone is UTC

Status: RESOLVED DUPLICATE of bug 530974

(Core :: JavaScript Engine, defect)

Description

[Joel Maher ( :jmaher ) (UTC -8)]

I ran the jsreftests end to end and had 76 failures where 45 of them appear to be Date() related.

here is the complete log:
http://people.mozilla.org/~jmaher/jsreftest.log

here is a grep of TEST-UNEXPECTED-FAIL | grep -i date:
http://people.mozilla.org/~jmaher/jsreftest_datefail.log
(mostly in ecma/Date/15.9.5.8.js and ecma/Date/15.9.5.28-1.js)

This seems like we most likely have a common problem to resolve.

Comment 1

[Bob Clary [:bc] (inactive)]

what does (new Date(1130803199999)).getMonth() give on the tegra?

Comment 2

[Brad Lassey [:blassey] (use needinfo?)]

I get the right thing on my i9000 and nexus one. Although the throbber on my i9000 never seems to stop throbbing which is probably a different bug.

Can someone with a tegra try http://lassey.us/date.html please?

Comment 3

[Joel Maher ( :jmaher ) (UTC -8)]

fyi, this is on android nightly build from 2010-10-19.

Here is the culprit for 40 of the 45 failures:
http://mxr.mozilla.org/mozilla-central/source/js/src/tests/ecma/Date/15.9.5.8.js#96

What we do in this code is add test cases for what I think is the first second of each month.  Then for the failing tests we expect the wrong month inside the MonthFromLocalTime() call, but get it right on the Date.getMonth() call.

We only fail on months 3-10, not 0,1,2,11.  


I ran this on my n900 with a nightly build from 2010-10-07 using the same technique and I get these 40 tests passing.  I will investigate the other 5 date related failures in another comment.  So for this specific test case, android is the culprit (not fennec, remote testing, or general cross compiling)

Comment 4

[Joel Maher ( :jmaher ) (UTC -8)]

ok, this is a problem with the tests as they fail if the device has a timezone set to UTC.  We should fix the tests so they work on any timezone.