We're currently skipping the test. Please unskip the test (by removing `//@ requireOptions("--verifyGC=false")` from the test when the root cause has been found and fixed.
This turns out to be a dupe of https://bugs.webkit.org/show_bug.cgi?id=223241. I'll remove the "skipped" test option.
Created attachment 423686 [details]
Comment on attachment 423686 [details]
Committed r274701: <https://commits.webkit.org/r274701>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 423686 [details].