[Webkit-unassigned] [Bug 20016] New: REGRESSION (r34388-r34577) Acid3 started hanging on load with Safari 3.1 + WebKit Nightlies

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=20016

           Summary: REGRESSION (r34388-r34577)  Acid3 started hanging on
                    load with Safari 3.1 + WebKit Nightlies
           Product: WebKit
           Version: 526+ (Nightly build)
          Platform: PC
               URL: http://acid3.acidtests.org/
        OS/Version: Windows XP
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P1
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mhstamate at yahoo.com


Tested on:
- Windows XP SP2
- Apple Safari for Windows 3.1.1 or 3.1.2 using a WebKit nightly build for
Windows from http://nightly.webkit.org/
- Intel P4 2.4 GHz CPU (single core)
- javascript is enabled

How often it happens: always

Description:
1. using any nightly WebKit build from nightly.webkit.org after build r34388
(the first one avaliable on that website is r34577)
2. go to http://acid3.acidtests.org/ to take the Acid3 test
3. the web browser hangs, the test shows:
"JS?"
"You must have Javascript enabled to take this test"

The browser no longer responds to any commands, it doesn't update its window
anymore (if I open another application that covers the browser window, and then
minimize this application, the browser window shows parts of the application
window that I minimized) and needs to be closed via task manager. It does not
crash, it simply hangs and doesn't respond to anything. Looks like an infinite
loop or deadlock threading issue ?

The last WebKit nightly build for Windows on nightly.webkit.org that doesn't
hang is r34388.
The next WebKit nightly build for Windows on nightly.webkit.org is r34577, and
it hangs. Every WebKit nightly build after that hangs too.
So, the change that caused the hang must have happened somewhere in between
builds r34388 and r34577 (for Windows).


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