As I fiddled with ASSERTIONS_DISABLED_DEFAULT, the build failed because of the use of LogFTP conditioned by the wrong #ifdef. A fix will follow.
Created attachment 170409 [details] Patch
Comment on attachment 170409 [details] Patch Clearing flags on attachment: 170409 Committed r132368: <http://trac.webkit.org/changeset/132368>
All reviewed patches have been landed. Closing bug.