25025 2014-03-12 21:20:42 +0000 Named creators with [OverrideBuiltins] don't work right as the spec is written now 2015-03-12 15:46:34 +0000 1 1 1 Unclassified WebAppsWG WebIDL unspecified PC All RESOLVED FIXED P2 normal --- 26521 1 bzbarsky bzbarsky mike public-script-coord public-webapps-bugzilla oldest_to_newest 102262 0 bzbarsky 2014-03-12 21:20:42 +0000 Consider an interface with a named creator and [OverrideBuiltins] (in fact, the only interface with a named creator in the platform has that extended attribute). When a set happens for a currently-nonexistent, per current spec [[GetOwnProperty]] will return undefined. Then the ES impl will go up the proto chain looking for a setter, and if found call it. That doesn't seem correct; we actually want to call the named creator in this case. We should probably just override [[Put]] when we have a named creator. And maybe transition all this stuff to the ES6 MOP in the process... 118556 1 bzbarsky 2015-03-12 15:46:34 +0000 Fixed by https://github.com/heycam/webidl/commit/646bd2ae909117329d8db89dd20f39bba3e0a513