This website http://www.theblaze.com/stories/2014/10/06/think-you-had-a-long-commute-today-check-out-this-interactive-map-to-see-who-might-have-fared-worse/ will crash any webkit nightly build for the last month immediately every time its loaded.
rdar://problem/18645137
Created attachment 241924 [details] the patch.
Thanks for the review. Landed in r176399: <http://trac.webkit.org/r176399>.