[Webkit-unassigned] [Bug 155592] New: We should use watchpoints to make sure we don't have indexed properties for concat and splice

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155592

            Bug ID: 155592
           Summary: We should use watchpoints to make sure we don't have
                    indexed properties for concat and splice
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: keith_miller at apple.com

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.

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