[Webkit-unassigned] [Bug 228892] New: [JSC] Custom getter / setter functions can be collected

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Aug 6 22:15:57 PDT 2021


            Bug ID: 228892
           Summary: [JSC] Custom getter / setter functions can be
           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: ysuzuki at apple.com

It is weakly held. This means that they can be collected if nobody references it.

    var getter = Object.getOwnPropertyDescriptor(RegExp, "rightContext").get;
    getter.mark = true;

// Make GC happens.

    var getter = Object.getOwnPropertyDescriptor(RegExp, "rightContext").get;
    print(getter.mark); // => undefined

We need to keep these accessors strongly in the holder.

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