[Webkit-unassigned] [Bug 79222] [chromium] createObjectURL(Blob) throws 'Illegal invocation' error when MEDIA_STREAM is disabled.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=79222





--- Comment #14 from Hao Zheng <zhenghao at chromium.org>  2012-03-28 05:33:20 PST ---
(In reply to comment #13)
> Have you disabled MEDIASTREAM? fast/files/create-blob-url-crash.html
> throws error in both config, but a different one (illegal invocation)
> in this config. And many other tests related to createBlobURL fail.

The error is in CodeGeneratorV8.pm RequiresCustomSignature. If the function is overloaded, it returns 0 at the 2nd if. Otherwise, as Blob is wrapper type, it returns 1 at the if inside the 2nd foreach.

sub RequiresCustomSignature
{
    my $function = shift;
    # No signature needed for Custom function
    if ($function->signature->extendedAttributes->{"Custom"} ||
        $function->signature->extendedAttributes->{"V8Custom"}) {
        return 0;
    }
    # No signature needed for overloaded function
    if (@{$function->{overloads}} > 1) {
        return 0;
    }
    # Type checking is performed in the generated code
    if ($function->signature->extendedAttributes->{"StrictTypeChecking"}) {
      return 0;
    }
    foreach my $parameter (@{$function->parameters}) {
        my $optional = $parameter->extendedAttributes->{"Optional"};
        if (($optional && $optional ne "DefaultIsUndefined" && $optional ne "DefaultIsNullString") || $parameter->extendedAttributes->{"Callback"}) {
            return 0;
        }
    }

    foreach my $parameter (@{$function->parameters}) {
        if (IsWrapperType($parameter->type)) {
            return 1;
        }
    }
    return 0;
}

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