[Webkit-unassigned] [Bug 115949] New: Window Object TypeError: 'undefined' is not an object (evaluating 'this.document')

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=115949

           Summary: Window Object TypeError: 'undefined' is not an object
                    (evaluating 'this.document')
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
               URL: http://www.pikaboo.be
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: youngho33.yoo at lge.com
                CC: mark.lam at apple.com


Overview :

Window Object TypeError: 'undefined' is not an object (evaluating 'this.document') in www.pikaboo.be

Steps to Reproduce:

1. go to http://www.pikaboo.be
2. click the Music Videos in the list of the categories on the slightly bottom of the right
3. When the video thumnails are loaded, click one of them to see the video

Actual Results:

there is no response and no pop-up.
Inspector shows TypeError: 'undefined' is not an object (evaluating 'this.document'), this = Window object

Expected Results:

It is supposed to be poped up the message, 
poped up the message : You must install the QuickTime browser plugin to view this content 
( because I didn't install that)

Build Date & Platform:

Linux, Qt, WebKit2, ARM_THUMB2 with LLInt + JIT + DFG_JIT (rev 149600)
I tested ARM_TRADITIONAL and it happens also.

Additional Builds and Platforms:

Doesn't Occur on Linux(Ubuntu), Qt, WebKit2, X86 with LLInt + JIT + DFG_JIT (rev 149600)

Additional Information:

w/o DFG_JIT It doesn't occur.

TypeError throwException call stack(In DFG)

throwExceptionFromCallSlowPathGenerator(dfg/DFGThunks.cpp)
->lookupExceptionHandlerInStub(dfg/DFGOperations.cpp)
->genericThrow(jit/JITExceptions.cpp)
->throwException(interpreter/Interpreter.cpp)

it return 0 at throwException(interpreter/Interpreter.cpp)(rev 149600(line 767))

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