57729 2011-04-03 13:42:14 -0700 Minimalistic QT / webkit application crashes often for facebook applications. 2022-07-21 17:06:39 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) PC Windows 7 RESOLVED WONTFIX P2 Critical --- 0 gelonida webkit-unassigned ahmad.saleem792 aparna.nand ap bfulgham cmarcelo hpj rniwa oldest_to_newest 378576 0 88014 gelonida 2011-04-03 13:42:14 -0700 Created attachment 88014 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 378578 1 88015 gelonida 2011-04-03 13:44:00 -0700 Created attachment 88015 QT project file for test case 378579 2 88016 gelonida 2011-04-03 13:45:10 -0700 Created attachment 88016 back trace of crashed application 378580 3 88017 gelonida 2011-04-03 13:45:45 -0700 Created attachment 88017 PyQT example provoking the same bug 378581 4 88018 gelonida 2011-04-03 13:46:48 -0700 Created attachment 88018 related QT bug report 378693 5 aparna.nand 2011-04-04 01:18:45 -0700 Unable to reproduce this problem with latest code from trunk on Linux platform. How frequent is the crash? I have tried about 8 times. 379090 6 gelonida 2011-04-04 14:40:51 -0700 (In reply to comment #5) > Unable to reproduce this problem with latest code from trunk on Linux platform. How frequent is the crash? I have tried about 8 times. This is strange it might be, that Facebook changed their contents. With the description given in this bug report I tried 7 times and could not make it crash. normally it crashed every two to four times. On the other hand I could crash the same unmodified example code 7 times out of 7 attempts with a slightly modified sequence. The slightly modified sequence is: 1.) start the application 2.) wait a few seconds (till the login form is displayed in the middle of the screen. 2,) enter emailaddress and password. 3,) wait till the facebook application shows up. 4.) Move the mouse from the top left of the screen to the right until you see the mouse over text 'messages' 5.) click now on messages. You should now see the messages tear-down menu 6.) click on the bottom of this menu on 'See All Messages' 7.) shortly after the application should segfault So far this is 100% reproducable with my version of Qt / Webkit. Could you please tell me how I can determine the webkit version used by my qt library / PyQT setup? Ar there any functions / header file constants indicating the version? 379129 7 gelonida 2011-04-04 15:26:02 -0700 There's a new comment on http://bugreports.qt.nokia.com/browse/QTBUG-18390 about another way of reproducing the bug. Use attachment "Simplistic Qt browser showing the bug" of this bug report and change the url from "http://apps.facebook.com/be-heroic" to "http://facebook.com" recompile and start the application l1.) ogin with valid email / password 2.) click on "Home" on the top right of the web page. I tried it twice, it crashed twice. 1885794 8 ahmad.saleem792 2022-07-21 13:44:03 -0700 Qt toolkit support is removed. I think this can be marked as "RESOLVED WONTFIX". Thanks! 88014 2011-04-03 13:42:14 -0700 2011-04-03 13:42:14 -0700 Simplistic Qt browser showing the bug webview.cc text/x-c++src 281 gelonida I2luY2x1ZGUgPFF0R3VpPgojaW5jbHVkZSA8UXRXZWJLaXQvUVdlYlZpZXc+CgojZGVmaW5lIHVy bHN0ciAiaHR0cDovL2FwcHMuZmFjZWJvb2suY29tL2JlLWhlcm9pYyIKCmludCBtYWluKGludCBh cmdjLCBjaGFyICoqYXJndikKewoKICAgIFFBcHBsaWNhdGlvbiBhcHAoYXJnYywgYXJndik7CglR V2ViVmlldyAqd2VidmlldyA9IG5ldyBRV2ViVmlldygpOwoJd2Vidmlldy0+bG9hZCggUVVybCh1 cmxzdHIpKTsKCXdlYnZpZXctPnNob3coKTsKCiAgICByZXR1cm4gYXBwLmV4ZWMoKTsKfQo= 88015 2011-04-03 13:44:00 -0700 2011-04-03 13:44:00 -0700 QT project file for test case webview.pro application/octet-stream 65 gelonida Q09ORklHICs9IHF0ClNPVVJDRVMgKz0gd2Vidmlldy5jYwpUQVJHRVQgPSB3ZWJ2aWV3ClFUICs9 IHdlYmtpdAo= 88016 2011-04-03 13:45:10 -0700 2011-04-03 13:45:10 -0700 back trace of crashed application webview.backtrace application/octet-stream 4868 gelonida KGdkYikgYnQKIzAgIEpTQzo6SW50ZXJwcmV0ZXI6OnByZXBhcmVGb3JSZXBlYXRDYWxsICh0aGlz 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