When going to www.henw.org on both iOS 9 and the included safari (9.0 (11601.1.56)) on OS X 10.11 15A282a, and the nightly 601.1.56 (same version?), Safari crashes.
Created attachment 261729 [details]
Thank you very much for the bug report, it is very useful!
This will be tracked by Apple internally as an issue in a system component below WebKit, so I'm closing as INVALID.