Ok, got it. You suggest trying the only 2-line change?

Anton.

On 02.07.2015 15:54, Hruda, Steve wrote:

HI Anton,

The diff fix must be there.

if (diff<0)
    diff += secondsPerDay;

… but the following fixes are unnecessary, for the midnight bug. I think one of these fixes could be the problem.

http://cr.openjdk.java.net/~ant/JDK-8090098/webrev.0/ <http://cr.openjdk.java.net/%7Eant/JDK-8090098/webrev.0/>

which contains the following fixed issues:

http://trac.webkit.org/changeset/174377
http://trac.webkit.org/changeset/175078
http://trac.webkit.org/changeset/181360

Regards,

Steve

*From:*Anton V. Tarasov [mailto:anton.tara...@oracle.com]
*Sent:* Thursday, July 2, 2015 2:50 PM
*To:* Hruda, Steve
*Cc:* Kevin Rushforth; openjfx-dev@openjdk.java.net
*Subject:* Re: Patch for JDK-8090098 - [regression] Webview - getTimezoneOffset() of a ISO strings returns a wrong value

Hi Steve,

Actually, I already checked that removing

if (diff<0)
    diff += secondsPerDay;


didn't help.

Regards,
Anton.

On 02.07.2015 13:09, Hruda, Steve wrote:

    Hi Anton,

    I saw your comments on https://bugs.openjdk.java.net/browse/JDK-8090098.

    We’ve opened the test page which you have mentioned in our own compiled WebKit 
version ->
    clean build & latest version.

    Used Timezone: Vienna CEST – current Offset UTC+2:00

    Without our Fix:

    Only the first and latest test pass.

    With our Fix:

    The same – only the first and latest test pass.

    It seems that one changeset regress this behavior, but not  the our latest 
“if –fix”

    if (diff<0)

        diff += secondsPerDay;

    I’m not able to build openjfx because of the missing dependencies (1.3). 
Please can you try
    what happens if you only apply the diff fix and not the previous patch, 
which includes all
    other date fixes.  From my point of view are these fixes (which were 
provided by the patch
    file) not necessary to solve our datepicker problem.

    Thanks in advance,

    Steve

    *From:*Kevin Rushforth [mailto:kevin.rushfo...@oracle.com]
    *Sent:* Tuesday, June 30, 2015 11:17 PM
    *To:* Hruda, Steve
    *Cc:* Anton V. Tarasov; openjfx-dev@openjdk.java.net 
<mailto:openjfx-dev@openjdk.java.net>
    *Subject:* Re: Patch for JDK-8090098 - [regression] Webview - 
getTimezoneOffset() of a ISO
    strings returns a wrong value

    Not by itself, although regressions are certainly taken very seriously.

    In any case, the process is to get this into 9-dev (once it has been 
reviewed), test it
    thoroughly, and then consider whether we can make a case for taking it to 
the 8u60 release team.

    -- Kevin


    Hruda, Steve wrote:

        Is a regression not release critical?

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This E-Mail (and any attachments) may be confidential and protected by legal privilege. If you are not the intended recipient please notify us immediately by replying to the sender and delete this E-Mail and your reply from your system. All the views and opinions published here are solely based on the author's own opinion and should not be considered necessarily as reflecting the opinion of Intergraph.

        -----Original Message-----

        From: Kevin Rushforth [mailto:kevin.rushfo...@oracle.com]

        Sent: Tuesday, June 30, 2015 10:45 PM

        To: Anton V. Tarasov

        Cc: Hruda, Steve;openjfx-dev@openjdk.java.net  
<mailto:openjfx-dev@openjdk.java.net>

        Subject: Re: Patch for JDK-8090098 - [regression] Webview - 
getTimezoneOffset() of a ISO strings returns a wrong value

        Anton V. Tarasov wrote:

            On 30.06.2015 21:13, Hruda, Steve wrote:

                Hi Anton,

                thanks for the detailed information and the good news.

                You talk about JDK's jira? Am I right? ..... I don't have an 
access

                for that JIRA system since the JavaFX's Jira has moved to the 
JDK Bug

                System.

            Ah, ok. Then I'll quote your e-mail.

                About the Apple stuff.

                I know that Apple dropped Windows Safari support and in my 
opinion is

                this a very bad situation for WebKit (in case of Windows).... 
and

                especially since Google and Opera using Google's Blink engine.

                In case of the JDK it would be more practicable to switch from 
WebKit

                to Blink, because this engine is still used by Companies which 
have

                Windows end-users.

                There is a high probability that WebKit get more such bugs if 
there

                is no big player like Google or Apple who has the man power to 
fix

                such OS dependent issues.

            I see. However, switching to Blink is another story. Honestly, we're

            not planning it in the nearest future. This requires extra resources

            which we don't have at the moment...

                Last questions:

                Do you need any additional information from my side? And is it

                possible to integrate this fix in 8u60?

             From my side, I'll do a sanity check with WebKit LayoutTests, then 
if

            it goes well, we can consider commiting this to 8u60.

            @Kevin, do you think we can?

        Very unlikely. The JDK release team would need to approve, and only 
release-critical issues may be considered at this point (it would be hard to 
argue that this is release-critical since it has already been deferred).

        -- Kevin

            Also, as an option for you (Steve). You can post the changes to the

            WebKit alias and ask if they think this is a valid fix for the 
issue.

            Any confirmation from the WebKit team would help us to make sure the

            fix is reliable.

            Thanks!

            Anton.

                Thanks in advance!

                Best Regards,

                Steve

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                -----Original Message-----

                From: Anton V. Tarasov [mailto:anton.tara...@oracle.com]

                Sent: Tuesday, June 30, 2015 8:01 PM

                To: Hruda, Steve; Kevin Rushforth

                Cc:openjfx-dev@openjdk.java.net  
<mailto:openjfx-dev@openjdk.java.net>

                Subject: Re: Patch for JDK-8090098 - [regression] Webview -

                getTimezoneOffset() of a ISO strings returns a wrong value

                Steve,

                I applied your suggestion and it worked on Windows.

                The missed check you discovered could really be a mistake in 
WebKit,

                because Apple dropped releasing (and shipping nightly builds 
for)

                Safari for Windows at 2012.

                Safari 5.1.7 was the last version. I downloaded and checked it. 
The

                date bug is not reproducible with it, but this gives us almost

                nothing taking into account the version is much outdated.

                So that Windows code path might not have been well tested, since

                http://trac.webkit.org/changeset/159892  was commited...

                (WebKit Win port is still supported and can be built on your 
own.)

                What I can do else to verify the changes is to run WebKit 
LayoutTests

                aimed at date testing and see if there're no regressions.

                Also, please put the info you posted into JIRA.

                Regards,

                Anton.

                On 29.06.2015 21:42, Anton Tarasov wrote:

                    Hi Steve,

                    Ok, I'll investigate it.

                    Thanks,

                    Anton.

                    On 29.06.2015 18:39, Hruda, Steve wrote:

                        Hi Anton & Kevin,

                        we read your comments in the JDK bug system and 
analyzed WebKit's

                        changesets again.

                        We’ve found the code which made this regression.

                        http://trac.webkit.org/changeset/159892

                        This changeset doesn't handle one special case, which 
was handled

                        by the previous code....

                        double diff = ((localSystemTime.wHour - offsetHour) *

                        secondsPerHour)

                        + ((localSystemTime.wMinute

                        - offsetMinute) *60);

                        
(http://trac.webkit.org/browser/trunk/Source/WTF/wtf/DateMath.cpp?a

                        nn

                        otate=blame#L481 )

                        The diff is wrong if the calculated the offsetTime is 
one day

                        before in case of the extreme values (e.g. midnight) 
where the

                        offsetHour of the UTC time is  23 because of the day 
difference.

                        In case of all other OS systems you will see the same code 
->

                        
http://trac.webkit.org/browser/trunk/Source/WTF/wtf/DateMath.cpp?an

                        no

                        tate=blame#L495

                        But there are  two additional lines ->  497 & 497 which 
fixes this

                        special case…

                        *if*(diff<0)

                            diff += secondsPerDay;

                        That means ….

                        localSystemTime.wHour = 0;

                        offsetHour=23 … which causes a negative value … and the

                        diff+=secondsPerDay ensures that the diff result would 
be one Hour

                        instead of -23 hours

                        We’ve found the attached V8DateTests.js (renamed to 
.txt) and

                        adjusted it a little bit to get the results logged in 
the browsers

                        console.

                        As you can see at “ResulBeforeOurBugFix.txt” and

                        “ResultAfterOurBugFix.txt”, we were able to fix

                        6 tests which failed before out bug fix.

                        assertEquals("Sat Oct 25 2014 23:00:00 GMT+0200 (W. 
Europe Daylight

                        Time)",

                                         (new Date(2014, 9, 25, 23, 
0)).toString());

                            assertEquals("Sat, 25 Oct 2014 21:00:00 GMT",

                                         (new Date(2014, 9, 25, 23, 
0)).toUTCString());

                            assertEquals("Sat Oct 25 2014 23:59:00 GMT+0200 (W. 
Europe

                        Daylight Time)",

                                         (new Date(2014, 9, 25, 23, 
59)).toString());

                            assertEquals("Sat, 25 Oct 2014 21:59:00 GMT",

                                         (new Date(2014, 9, 25, 23, 
59)).toUTCString());

                            assertEquals("Sun Oct 26 2014 00:00:00 GMT+0200 (W. 
Europe

                        Daylight Time)",

                                        (new Date(2014, 9, 26, 0, 
0)).toString());

                        assertEquals("Sun Oct 26 2014 00:59:00 GMT+0200 (W. 
Europe Daylight

                        Time)",

                                         (new Date(2014, 9, 26, 0, 
59)).toString());

                        In addition we found out that WebKit also have problems 
in case of

                        Windows in case of the change from winter to summer 
time.

                        *_Winter to summer time:_*

                        assertEquals("Sun Mar 30 2014 03:00:00 GMT+0200 (W. 
Europe Daylight

                        Time)",

                                         (new Date(2014, 2, 30, 2, 
0)).toString());

                            assertEquals("Sun, 30 Mar 2014 01:00:00 GMT",

                                         (new Date(2014, 2, 30, 2, 
0)).toUTCString());

                            assertEquals("Sun Mar 30 2014 03:59:00 GMT+0200 (W. 
Europe

                        Daylight Time)",

                                         (new Date(2014, 2, 30, 2, 
59)).toString());

                            assertEquals("Sun, 30 Mar 2014 01:59:00 GMT",

                                         (new Date(2014, 2, 30, 2, 
59)).toUTCString());

                        *_Summer to winter time:_*

                        assertEquals("Sun Oct 26 2014 02:00:00 GMT+0200 (W. 
Europe Daylight

                        Time)",

                                         (new Date(2014, 9, 26, 2, 
0)).toString());

                            assertEquals("Sun, 26 Oct 2014 00:00:00 GMT",

                                         (new Date(2014, 9, 26, 2, 
0)).toUTCString());

                            assertEquals("Sun Oct 26 2014 02:59:00 GMT+0200 (W. 
Europe

                        Daylight Time)",

                                         (new Date(2014, 9, 26, 2, 
59)).toString());

                            assertEquals("Sun, 26 Oct 2014 00:59:00 GMT",

                                         (new Date(2014, 9, 26, 2, 
59)).toUTCString());

                        We will try to find a solution for that, but I think 
that the

                        priority of this issue is lower than the priority of 
the opened

                        regression.

                        It would be amazing if you can add the patch of my 
previous and

                        these additional two lines

                        (DateMath.cpp) to the JDK8u60.

                        Best Regards,

                        Steve

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                        -----Original Message-----

                        From: openjfx-dev 
[mailto:openjfx-dev-boun...@openjdk.java.net] On

                        Behalf Of Hruda, Steve

                        Sent: Tuesday, June 23, 2015 6:26 PM

                        To: Anton V. Tarasov; Kevin Rushforth

                        Cc:openjfx-dev@openjdk.java.net  
<mailto:openjfx-dev@openjdk.java.net>

                        Subject: RE: Patch for JDK-8090098 - [regression] 
Webview -

                        getTimezoneOffset() of a ISO strings returns a wrong 
value

                        Very cool Anton.

                        I would be great if that pach could be added to 8u60, 
otherwise our

                        all our customers have to avoid Java 8u60.

                        Regards,

                        Steve

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                        -----Original Message-----

                        From: Anton V. Tarasov [mailto:anton.tara...@oracle.com]

                        Sent: Tuesday, June 23, 2015 5:46 PM

                        To: Kevin Rushforth; Hruda, Steve

                        Cc:openjfx-dev@openjdk.java.net  
<mailto:openjfx-dev@openjdk.java.net>

                        Subject: Re: Patch for JDK-8090098 - [regression] 
Webview -

                        getTimezoneOffset() of a ISO strings returns a wrong 
value

                        On 23.06.2015 17:48, Kevin Rushforth wrote:

                            Hi Steve,

                            Thank you for taking the time to create this patch. 
I will add

                            this information to the bug report.

                            Since your OCA is in progress we will take a look 
at your patch,

                            but will need indication from the OCA office that 
it the OCA has

                            been received before we could push it. And just to 
be clear, you

                            won't have access to the repository even with an 
OCA. What the OCA

                            will do is allow you to contribute

                        patches.

                            I will note that it is likely too late for 8u60, 
but Anton can

                            evaluate it and post his comment in the bug report.

                        Kevin,

                        I'm checking it.

                        Steve, thanks for the participation!

                        Regards,

                        Anton.

                            -- Kevin

                            Hruda, Steve wrote:

                                Hi,

                                I've created a 8u-dev patch for the following 
WeKit regression

                                which comes with 8u60.

                                https://bugs.openjdk.java.net/browse/JDK-8090098

                                Please can someone of you apply this patch to 
fix the

                                getTimezoneOffset() issue. I have no access to the 
repository ->

                                my OCA is still pending.

                                In addition I tried to test this patch , but I 
wasn't able to

                                build the necessary jfxwebkit.dll on my windows 
system

                                
(https://www.mail-archive.com/openjfx-dev@openjdk.java.net/msg094

                                3

                                9.h

                                tml )..... but I got no compile erros on Mac.

                                Patch download:

                                
https://drive.google.com/file/d/0B7P_rknS1TWxM3BSTTU2OVZ4dGM/view

                                ?u

                                sp

                                =sharing

                                The patch includes the following WebKit fixes:

                                Changeset 174377  - [Win] DateMath's 
calculateUTFOffset does not

                                account for DST.

                                http://trac.webkit.org/changeset/174377

                                Changeset 175078  - String(new Date(Mar 30 2014 
01:00:00)) is

                                wrong in CET

                                http://trac.webkit.org/changeset/175078

                                Changeset 181360 - [Win] 17 different JSC tests 
started to fail

                                in DST

                                http://trac.webkit.org/changeset/181360

                                Please let me know if you need further 
information.

                                Thanks in advance!

                                Best Regards

                                Steve

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                                Vertretungsberechtigte Geschäftsführer: 
Maximilian Weber Sitz der

                                Gesellschaft: Margaretenstraße 70/I/1, 1050 
Wien, Österreich, Tel.

                                +43 (1) 9610567-0 Eingetragen beim 
Handelsgericht Wien,

                                Firmenbuch-Nr.: FN 116859 b 
Umsatzsteuer-Identifikationsnummer /

                                VAT-ID: ATU15138401, Steuer-Nummer: 264/4807 
This E-Mail has been

                                sent on behalf of the company Intergraph 
Ges.m.b.H.

                                Authorised Managing Directors: Maximilian Weber 
Registered office

                                and Austrian headquarters: Margaretenstr. 
70/I/1, 1050 Wien,

                                Austria, Tel. +43

                                (1) 9610567-0

                                The company is recorded at the commercial court 
of Vienna under

                                the company register number FN

                                116859 b

                                VAT-ID: ATU15138401, Austrian Tax ID: 264/4807 
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