registerThreadForMachExceptionHandling() is relying on the activeThreads() ThreadGroup being a singleton. <rdar://problem/40662311>
Created attachment 344926 [details] proposed patch.
Comment on attachment 344926 [details] proposed patch. r=me
Comment on attachment 344926 [details] proposed patch. Thanks for the review. Landing now.
Comment on attachment 344926 [details] proposed patch. Clearing flags on attachment: 344926 Committed r233795: <https://trac.webkit.org/changeset/233795>
All reviewed patches have been landed. Closing bug.