94310 2012-08-17 01:09:19 -0700 [JSC] window.postMessage() throws wrong exception types 2012-09-03 01:09:59 -0700 1 1 1 Unclassified WebKit WebCore JavaScript 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED http://www.w3.org/TR/html5/comms.html#dom-window-postmessage-2 P2 Normal --- 94493 94581 1 cdumez cdumez kenneth s.choi oldest_to_newest 698011 0 cdumez 2012-08-17 01:09:19 -0700 According the HTML5 communication spec (http://www.w3.org/TR/html5/comms.html#dom-window-postmessage-2), window.postMessage() "Throws an INVALID_STATE_ERR if the ports array is not null and it contains either null entries or duplicate ports." but we currently throw a TypeError in this case. According to the structured clone spec (http://www.w3.org/TR/html5/common-dom-interfaces.html#structured-clone), we are supposed to throw a DATA_CLONE_ERR exception and abort the overall structured clone algorithm if the input is an unsupported native object type (e.g. Error, Function) or a host object (e.g. a DOM node). We currently throw a TypeError in this case as well. The V8 implementation behaves according to specification. This is already tested by: fast/dom/Window/window-postmessage-clone-really-deep-array.html fast/events/message-port-multi.html 710467 1 cdumez 2012-09-03 01:09:59 -0700 Dependencies have landed. Closing this bug.