[Webkit-unassigned] [Bug 221177] A possible bug about Array.prototype.push

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221177

--- Comment #1 from Yusuke Suzuki <ysuzuki at apple.com> ---
setLength should throw an error even if it is setting the same length if length is readonly.
This bug does not break the invariant of freezing (error will not happen only when the setting length equals to the existing length.) But it is strictly speaking not aligned to the spec.

var a=[1,2];
Object.freeze(a); 
a.push(2); // Throwing an error correctly since it is pushing a value and changing length actually.

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