According to https://people.mozilla.org/~jorendorff/es6-draft.html#sec-math.imul, Math.imul should have a length of 2 since it takes two arguments. In Safari 8.0.4, it has a length of 1.
Created attachment 250878 [details] Patch
The commit-queue encountered the following flaky tests while processing attachment 250878 [details]: transitions/default-timing-function.html bug 138901 (author: simon.fraser@apple.com) compositing/overflow/overflow-compositing-descendant.html bug 116485 (authors: mihaip@chromium.org, rniwa@webkit.org, and simon.fraser@apple.com) The commit-queue is continuing to process your patch.
Comment on attachment 250878 [details] Patch Clearing flags on attachment: 250878 Committed r182868: <http://trac.webkit.org/changeset/182868>
All reviewed patches have been landed. Closing bug.