There's a few corner cases in which this optimization may change the
meaning of code:
1. Name scoping of builtins using locals/builtins:
var Array = function() { this.toString = function() { return "bleh"; }
};
x = new Array()
alert(x);
var x = { Array: function() { this.toString = function() { return
"bleh"; } } };
with (x) {
y = new Array();
}
alert(y);
2. Parameters to constructor:
new Object(1) - "wraps" the object in the parameter so that it has a
different identity. This shouldn't be modified.
new Array(1,2,3) - wraps the parameters in a new array. This is always
equivalent to [1,2,3] (with the exception of cases that fall under 1
above).
http://gwt-code-reviews.appspot.com/47810
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http://groups.google.com/group/Google-Web-Toolkit-Contributors
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