[Webkit-unassigned] [Bug 12491] New: ASSERT in WebCore with Mail

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=12491

           Summary: ASSERT in WebCore with Mail
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: UNCONFIRMED
          Severity: Critical
          Priority: P1
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: piet.webkit at yahoo.com


I checked out and built the WebKit in debug mode, around 8pm today, then
launched Mail from the Terminal:

    WebKit/WebKitTools/Scripts/run-webkit-app Mail --debug

Apparently WebCore crashes every time I select a HTML mail and click Reply. 

I get the same crash when I launch Mail under Debugger (after adding it as
Executable in WebKit.xcodeproj) due to an ASSERT in
WebCore::MainResourceLoader::didReceiveData, because 'data' is null.

It doesn't crash when displaying the HTML mail (for instance, a mail with
CSS3 columns is displayed correctly in the 3-pane window). It only crashes
after clicking Reply. Also it doesn't crash when replying to plain text
messages, only to HTML messages (any kind of HTML, even a simple FONT FACE).

Unfortunately I don't have enough history with the WebKit to confirm whether
this is a recent regression or not. However some work has been done recently to
fix crashes that show WebCore::ResourceLoader::didReceiveData towards the
bottom of the stack in bug 12458 (checked in this morning) and bug 12444
(checked in this afternoon). See also bug 12365 (checked in 2007-01-25) and
maybe bug 12355 (checked in 2007-01-21).


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