Bug 59795 – Inconsistent SyntaxError from new Function(...)

• Component: JavaScriptCore
• Status: RESOLVED WORKSFORME

[[e-mail]]

Executing the Function constructor with a mis-parenthesized input thus
    Function("(i + (j)")
exits abruptly with a SyntaxError:
    SyntaxError: Parse error

Executing the same but with the return keyword before the mis-parenthesized expression does not error out:
    Function("return (i + (j)")
evaluates normally with the value
    function anonymous() { return (i + (j);
    }

I expected the first example and the second example to both produce a SyntaxError.
I.e., if this is fixed, I expect
    Function("return (i + (j)")


Note that
    var i = 1
    var j = 2
    typeof Function("return (i + (j)")()
evaluates normally with the string
    "undefined"
not "number" as might be done if bad inputs are being intentionally massaged or a SyntaxError as might be done if parsing is intentionally done lazily.

[Gavin Barraclough]

Looks like these have been fixed, added the extra test cases in r110398