An assertion is hit in isMainThread() for some clients using WTF because the main thread is not initialized, since r248533.
Clients can work around this by calling WTF::initializeMainThread() before using WTF but it seems unfortunate to force them to do so. I propose we disable the assertion until the main thread is initialized.
Created attachment 377148 [details] Patch
See <rdar://problem/54616639> & <rdar://problem/54323901>.
Comment on attachment 377148 [details] Patch Clearing flags on attachment: 377148 Committed r249064: <https://trac.webkit.org/changeset/249064>
All reviewed patches have been landed. Closing bug.
<rdar://problem/54651993>
Committed r249092: <https://trac.webkit.org/changeset/249092>
(In reply to Fujii Hironori from comment #7) > Committed r249092: <https://trac.webkit.org/changeset/249092> Thanks for the build fox :D