[Webkit-unassigned] [Bug 166911] REGRESSION: LayoutTest fast/dom/Window/window-properties-performance-resource-timing.html is a flaky failure

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Jan 13 23:46:46 PST 2017


Alexey Proskuryakov <ap at webkit.org> changed:

           What    |Removed                     |Added
                 CC|                            |ggaren at apple.com

--- Comment #3 from Alexey Proskuryakov <ap at webkit.org> ---
The symptom means that window.performance.navigation.__visitedByLogValue__ disappears while the test is running, which would mean that JS wrapper for the object gets collected.

The flakiness dashboard only has results since December 12th, and the test was failing in the same way back then. So, I don't think that we can find out if the test was failing in the same way before concurrent GC (which was enabled on the 11th). It's possible that concurrent GC is simply more effective at quickly collecting the wrapper, and the bug is in the bindings.

I do not know if one needs to do anything custom to protect the GC wrapper these days. Do we still need to add visitAdditionalChildren() functions everywhere?

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