I added some assertions that all the RenderFoo* pointers in FrameView were gone after a render tree teardown and they caught a bunch of errors.
Created attachment 298772 [details] Patch for EWS
Created attachment 298788 [details] Patch for EWS II
Created attachment 298848 [details] Patch for EWS III Also check for composite animations getting destroyed.
Created attachment 298886 [details] Patch
Attachment 298886 [details] did not pass style-queue: ERROR: Source/WebCore/ChangeLog:3: Please consider whether the use of security-sensitive phrasing could help someone exploit WebKit: dangling pointer, dangling pointer [changelog/unwantedsecurityterms] [3] Total errors found: 1 in 7 files If any of these errors are false positives, please file a bug against check-webkit-style.
Comment on attachment 298886 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=298886&action=review > Source/WebCore/ChangeLog:25 > + (WebCore::AnimationController::hasAnimations): Added a helper do check if there are "do" -> "to" --- "doh!"
Comment on attachment 298886 [details] Patch Attachment 298886 [details] did not pass mac-debug-ews (mac): Output: http://webkit-queues.webkit.org/results/2892252 New failing tests: fast/css/getComputedStyle/getComputedStyle-background-shorthand.html
Created attachment 298889 [details] Archive of layout-test-results from ews117 for mac-elcapitan The attached test failures were seen while running run-webkit-tests on the mac-debug-ews. Bot: ews117 Port: mac-elcapitan Platform: Mac OS X 10.11.6
Created attachment 298897 [details] Patch for landing
Comment on attachment 298897 [details] Patch for landing Clearing flags on attachment: 298897 Committed r210777: <http://trac.webkit.org/changeset/210777>
All reviewed patches have been landed. Closing bug.
<rdar://problem/30186526>
*** Bug 167295 has been marked as a duplicate of this bug. ***