[Webkit-unassigned] [Bug 94790] New: Derived JS binding code throws a different exception than the normal one for overloaded functions when argument count is not enough

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=94790

           Summary: Derived JS binding code throws a different exception
                    than the normal one for overloaded functions when
                    argument count is not enough
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebCore JavaScript
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: xiaobo.wang at torchmobile.com.cn
                CC: rwlbuis at gmail.com, mxie at rim.com


Observed by 2 failed DRT tests if MEDIA_STREAM is enabled.
  fast/files/create-blob-url-crash.html
  fast/files/url-required-arguments.html

The reason is DOMURL::createObjectURL() is a overloaded when MEDIA_STREAM is enabled. A dispatching function is added for overloaded functions, and it doesn't check argument count if failed to dispatch the call to one of the overloaded functions.

Chromium and Gtk face the same issue but they created platform specific expected files for the 2 tests. I think a better solution is to fix the issue in the code generator, so that all platforms can share the same expected files.

Even if we only consider one platform, for example BlackBerry, it's possible we enable or disable MEDIA_STREAM explicitly when building WebKit. If we just change the expected result for the ENABLED scenario, the tests will still fail for the other scenario (DISABLE scenario).

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