In Bug 183192 I removed default 'system-network' support from the macOS sandbox. At the time I also removed the 'network-outbound' permission for syslog use, but further testing has shown that this is still needed for subsystem logging in our bundle loading code. This patch re-enabled system-network for this use.
<rdar://problem/35369115>
This is actually: <rdar://problem/39778918>
Created attachment 340541 [details] Patch
Comment on attachment 340541 [details] Patch Clearing flags on attachment: 340541 Committed r231879: <https://trac.webkit.org/changeset/231879>
All reviewed patches have been landed. Closing bug.