Make the jsc shell loadGetterFromGetterSetter() function more robust.

[Mark Lam]

This helps avoid false positives due to abuse of this test function when doing crashes.

<rdar://problem/35492518>

[Mark Lam]

Created attachment 326776 [details]
proposed patch.

[Saam Barati]

Comment on attachment 326776 [details]
proposed patch.

View in context: https://bugs.webkit.org/attachment.cgi?id=326776&action=review

> Source/JavaScriptCore/jsc.cpp:3030
> +    if (UNLIKELY(exec->argumentCount() < 1)) {
> +        throwTypeError(exec, scope, ASCIILiteral("Invalid use of loadGetterFromGetterSetter test function: missing argument"));
> +        return encodedJSValue();
> +    }

This is unneeded unless you really care about the error message. This will fall out of the check below.

[Mark Lam]

Comment on attachment 326776 [details]
proposed patch.

View in context: https://bugs.webkit.org/attachment.cgi?id=326776&action=review

Thanks for the review.

>> Source/JavaScriptCore/jsc.cpp:3030
>> +    }
> 
> This is unneeded unless you really care about the error message. This will fall out of the check below.

I will remove this.

[Mark Lam]

Landed in r224770: <http://trac.webkit.org/r224770>.