[Webkit-unassigned] [Bug 144955] [ES6] Implement ES6 arrow function syntax. Parser of arrow function with execution as common function

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=144955

--- Comment #90 from Yusuke Suzuki <utatane.tea at gmail.com> ---
Comment on attachment 255506
  --> https://bugs.webkit.org/attachment.cgi?id=255506
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=255506&action=review

Comments.

>>> Source/JavaScriptCore/parser/Parser.cpp:368
>>> +        }
>> 
>> Is here's fall through correct?
> 
> I've removed propagateError() statement

Oh, why is it?
I think

propagateError();
return sourceElements;

is needed here. To fail with

{
    => expr;
}

correctly.

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