1160713 - Proxy triggers indirect traps incorrectly

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[Kyle Simpson]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:40.0) Gecko/20100101 Firefox/40.0
Build ID: 20150427030207

Steps to reproduce:

var handlers = {
		getOwnPropertyDescriptor(target,prop) {
			console.log(
				"getOwnPropertyDescriptor"
			);
			return Object.getOwnPropertyDescriptor(
				target, prop
			);
		},
		defineProperty(target,prop,desc){
			console.log( "defineProperty" );
			return Object.defineProperty(
				target, prop, desc
			);
		}
	},
	proxy = new Proxy( {}, handlers );

proxy.a = 2;
// getOwnPropertyDescriptor
// defineProperty



Expected results:

According to 9.5.9, the default `[[Set]]` handler should not be firing `[[GetOwnProperty]]` or `[[DefineOwnProperty]]` traps on the proxy object (all actions should be against the target)

Comment 1

[Kyle Simpson]

Closing my own bug. Sorry for false alarm.

For posterity sake, 9.5.9 does indeed say target[[Set]], but in 9.1.9, it says receiver[[GetOwnProperty]], etc.