[Webkit-unassigned] [Bug 57729] New: Minimalistic QT / webkit application crashes often for facebook applications.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=57729

           Summary: Minimalistic QT  / webkit application crashes often
                    for facebook applications.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows 7
            Status: UNCONFIRMED
          Severity: Critical
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gelonida at gmail.com


Created an attachment (id=88014)
 --> (https://bugs.webkit.org/attachment.cgi?id=88014&action=review)
Simplistic Qt browser showing the bug

I do not know which webkit version exactly I am using.

I was forwarded by QT, where I initially filed a bug under following URL:
http://bugreports.qt.nokia.com/browse/QTBUG-18390

Problem was observed on a linux host Qt 4.7.2 and on a Qt 4.7. windows host


I created a minimalistic web browser (code attached),
which tries to open the url of a facebook application.

The code hard codes the url of one specific facebook application,
but I could reproduce the bug also with other facebook apps.

How to reproduce the bug:

start the application:

After starting the script a login screen shows up

(email address and password field in the top right corner of the display)
One can also see for a short time some web elements of the facebook application one wants to log in

after a few seconds the layout changes and the email address and
password field are in the middle of the screen

I enter valid email address and password of an existing facebook account and click on
connect.

Sometimes the application segfaults.

I discovered the problem first with PyQt (where the error seems to occur a little more often), but the C++ applications fails as well.

I did also attach the backtrace of the segfaulted application

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