[Webkit-unassigned] [Bug 33149] WebCore::RenderObject crash when showing QWebView

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=33149





--- Comment #3 from pete.usergroups at googlemail.com  2010-03-16 07:59:50 PST ---
Sorry, we haven't had time to produce a simple test app. However, we did find a
patch for webkit shipped with QT 4.5.2.

The patch seems pretty fair given that containingBlock() may return NULL.

I think a similar crash is occurring with QT 4.6 but haven't even got a good
stack for that one as it only happens in the release build.

C:\Qt\4.5.2\src\3rdparty\webkit\WebCore\rendering>diff RenderObject.cpp.orig
RenderObject.cpp 
852,853c852,861 
< // FIXME ? 
< return containingBlock()->availableWidth(); 
--- 
> // FIXME ? PO - I've tried :) 
> RenderBlock* block = containingBlock(); 
> if ( block ) 
> { 
> return block->availableWidth(); 
> } 
> else 
> { 
> return 0; 
> } 
858,859c866,875 
< // FIXME ? 
< return containingBlock()->contentHeight(); 
--- 
> // FIXME ? PO - I've tried :) 
> RenderBlock* block = containingBlock(); 
> if ( block ) 
> { 
> return block->contentHeight(); 
> } 
> else 
> { 
> return 0; 
> }

(In reply to comment #2)
> Is it possible to get a test case that you can get to reproduce the crash?
> 
> Something like a minimal cpp file that loads an html file with the embedded
> widget in a QWebView?

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