Status: Accepted
Owner: [email protected]
Labels: Type-Bug Priority-Medium
New issue 1435 by [email protected]: Unnecessary normalization in
Runtime_DefineOrRedefineDataProperty
http://code.google.com/p/v8/issues/detail?id=1435
Runtime_DefineOrRedefineDataProperty uses JSObject::LookupRealNamedProperty
instead of JSObject::LocalLookupRealNamedProperty to check for existing
property. This might lead to unnecessary normalization if the property
exists on prototype. Example:
var p = Object.create(Object.prototype, { x : { enumerable: false,
writable: true, configurable: true } });
var obj = Object.create(p, { x : { enumerable: false } });
Resulting obj will be normalized.
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