[Webkit-unassigned] [Bug 6345] New: REGRESSION: repro crash when specifying an invalid value for the charset attribute of a <script>

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=6345

           Summary: REGRESSION: repro crash when specifying an invalid value
                    for the charset attribute of a <script>
           Product: WebKit
           Version: 412+
          Platform: Macintosh
               URL: http://www.mooma.com/
        OS/Version: Mac OS X 10.4
            Status: NEW
          Severity: normal
          Priority: P1
         Component: WebKit Misc.
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: opendarwin.org at mitzpettel.com
                CC: macdome at opendarwin.org


Safari crashes if the charset attribute in a <script> tag, (or the document's charset, if the script tag 
doesn't specify a charset) is not a valid encoding name. The crash is because ChachedScript's m_codec is 
null.

To reproduce, open the attached testcase in Safari.

The regression is from the patch for bug 6078, which replaced a few instances of KGlobal::charsets()-
>codecForName() with QTextCodec::codecForName(). The former defaults to ISO-8859-1 when the 
argument is invalid, but the latter returns 0.

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