155592 2016-03-17 11:38:40 -0700 We should use watchpoints to make sure we don't have indexed properties for concat and splice 2016-03-17 11:38:40 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified NEW P2 Normal --- 1 keith_miller webkit-unassigned oldest_to_newest 1175789 0 keith_miller 2016-03-17 11:38:40 -0700 In the fast path of concat and splice we currently walk the prototype chain to ensure that there are no indexed properties on the prototype of our array. Instead we should put watchpoints on Array.prototype and Object.prototype.