[Webkit-unassigned] [Bug 208382] New: Garbage collection prevents FontFace.loaded promise from getting resolved

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=208382

            Bug ID: 208382
           Summary: Garbage collection prevents FontFace.loaded promise
                    from getting resolved
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ap at webkit.org
                CC: mmaxfield at apple.com, rniwa at webkit.org

Created attachment 391991

  --> https://bugs.webkit.org/attachment.cgi?id=391991&action=review

layout test

We have some tests that use FontFace.loaded, and they fail (time out) when frequent garbage collection is forced with JSC_slowPathAllocsBetweenGCs=10. They also fail flakily on other bots.

Steps to reproduce:

Put attached test into LayoutTests, and run as:

run-webkit-tests --no-retry --dump-render-tree --additional-env-var=JSC_slowPathAllocsBetweenGCs=10 font-promises-gc.html

It should not time out, and should say "SUCCESS".

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