We hit this assertion in WTF/OptionSet.h: ASSERT_WITH_MESSAGE(hasOneBitSet(static_cast<StorageType>(option)), "Enumerator is not a positive power of two.").
Created attachment 366163 [details] Patch
Comment on attachment 366163 [details] Patch Attachment 366163 [details] did not pass mac-ews (mac): Output: https://webkit-queues.webkit.org/results/11692682 New failing tests: imported/w3c/web-platform-tests/pointerevents/extension/pointerevent_touch-action-verification.html
Created attachment 366188 [details] Archive of layout-test-results from ews100 for mac-highsierra The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews100 Port: mac-highsierra Platform: Mac OS X 10.13.6
Comment on attachment 366163 [details] Patch Attachment 366163 [details] did not pass mac-wk2-ews (mac-wk2): Output: https://webkit-queues.webkit.org/results/11692729 New failing tests: imported/w3c/web-platform-tests/pointerevents/extension/pointerevent_touch-action-verification.html
Created attachment 366191 [details] Archive of layout-test-results from ews107 for mac-highsierra-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: ews107 Port: mac-highsierra-wk2 Platform: Mac OS X 10.13.6
Comment on attachment 366163 [details] Patch Attachment 366163 [details] did not pass mac-debug-ews (mac): Output: https://webkit-queues.webkit.org/results/11692857 New failing tests: imported/w3c/web-platform-tests/pointerevents/extension/pointerevent_touch-action-verification.html
Created attachment 366193 [details] Archive of layout-test-results from ews117 for mac-highsierra The attached test failures were seen while running run-webkit-tests on the mac-debug-ews. Bot: ews117 Port: mac-highsierra Platform: Mac OS X 10.13.6
Created attachment 366272 [details] Patch
Comment on attachment 366272 [details] Patch Clearing flags on attachment: 366272 Committed r243648: <https://trac.webkit.org/changeset/243648>
All reviewed patches have been landed. Closing bug.
<rdar://problem/49426403>