RESOLVED DUPLICATE of bug 203456 Bug 207310
Throw a type error upon attempts to redefine undefined and friends on the JSGlobalObject 
https://bugs.webkit.org/show_bug.cgi?id=207310
Summary Throw a type error upon attempts to redefine undefined and friends on the JSG...
Robin Morisset
Reported 2020-02-05 16:44:12 PST
According to http://www.ecma-international.org/ecma-262/6.0/index.html#sec-undefined, JSGlobalObject got properties such as "undefined" which are non-writable and non-configurable. So the following code should throw a type error: ``` Object.defineProperty(this, "undefined", { configurable: true, get: function() { return false; } }); ``` And it does in Chrome, but currently does not in Safari.
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Add attachment proposed patch, testcase, etc.
Robin Morisset
Comment 1 2020-02-05 16:44:29 PST
<rdar://problem/56658015>
Robin Morisset
Comment 2 2020-02-05 16:45:56 PST
Oops, I did not realize that this was already in the bugzilla. *** This bug has been marked as a duplicate of bug 203456 ***
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