46662 2010-09-27 15:20:36 -0700 CrashTracer: 1,803 crashes in Safari at com.apple.WebCore: -[AccessibilityObjectWrapper accessibilityIsIgnored] + 56 2010-09-27 17:44:35 -0700 1 1 1 Unclassified WebKit Accessibility 528+ (Nightly build) PC OS X 10.5 RESOLVED FIXED InRadar P2 Normal --- 1 cfleizach cfleizach bdakin oldest_to_newest 285794 0 cfleizach 2010-09-27 15:20:36 -0700 54 com.apple.WebCore: -[AccessibilityObjectWrapper accessibilityIsIgnored] + 56 <== 54 com.apple.AppKit: NSAccessibilityPostNotificationForObservedElement + 99 54 com.apple.WebCore: WebCore::AXObjectCache::postPlatformNotification + 234 54 com.apple.WebCore: WebCore::AXObjectCache::notificationPostTimerFired + 76 54 com.apple.WebCore: WebCore::ThreadTimers::sharedTimerFiredInternal + 151 54 com.apple.WebCore: WebCore::timerFired + 53 54 com.apple.CoreFoundation: __CFRunLoopRun + 6488 54 com.apple.CoreFoundation: CFRunLoopRunSpecific + 575 54 com.apple.HIToolbox: RunCurrentEventLoopInMode + 333 49 com.apple.HIToolbox: ReceiveNextEventCommon + 310 | 49 com.apple.HIToolbox: BlockUntilNextEventMatchingListInMode + 59 | 49 com.apple.AppKit: _DPSNextEvent + 708 | 49 com.apple.AppKit: -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 | 49 com.apple.Safari: -[BrowserApplication nextEventMatchingMask:untilDate:inMode:dequeue:] | 47 com.apple.AppKit: -[NSApplication run] + 395 | | 47 com.apple.AppKit: NSApplicationMain + 364 | | 47 com.apple.Safari: start | pruning: 1 com.apple.AppKit: -[NSScroller trackKnob:] + 1959 | pruning: 1 com.apple.AppKit: -[NSScrollView scrollWheel:] + 711 pruning: 5 com.apple.HIToolbox: ReceiveNextEventCommon + 148 285795 1 cfleizach 2010-09-27 15:21:26 -0700 The problem is that when posting a notification after a timer callback, an updateLayout can be called which invalidates the object that initiated the updateLayout. 285796 2 cfleizach 2010-09-27 15:21:53 -0700 rdar://8203386 285844 3 68984 cfleizach 2010-09-27 16:03:59 -0700 Created attachment 68984 patch 285944 4 68984 bdakin 2010-09-27 17:28:17 -0700 Comment on attachment 68984 patch Awesome! I don't love the name prepareAccessibilityMethod, but I'm not sure I have a better suggestion. What about something like updateObjectBackingStore? Is that too specific? Anyway, I don't think the title *needs* to change, but I thought I would mention it. 285945 5 cfleizach 2010-09-27 17:29:32 -0700 we can go with updateObjectBackingStore 285962 6 cfleizach 2010-09-27 17:44:35 -0700 http://trac.webkit.org/changeset/68461 68984 2010-09-27 16:03:59 -0700 2010-09-27 17:28:17 -0700 patch patch.t text/plain 14165 cfleizach SW5kZXg6IFdlYkNvcmUvQ2hhbmdlTG9nCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIFdlYkNvcmUvQ2hhbmdlTG9n CShyZXZpc2lvbiA2ODQzNCkKKysrIFdlYkNvcmUvQ2hhbmdlTG9nCSh3b3JraW5nIGNvcHkpCkBA IC0xLDMgKzEsMzggQEAKKzIwMTAtMDktMjcgIENocmlzIEZsZWl6YWNoICA8Y2ZsZWl6YWNoQGFw cGxlLmNvbT4KKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAg ICBDcmFzaFRyYWNlcjogMSw4MDMgY3Jhc2hlcyBpbiBTYWZhcmkgYXQgY29tLmFwcGxlLldlYkNv cmU6IC1bQWNjZXNzaWJpbGl0eU9iamVjdFdyYXBwZXIgYWNjZXNzaWJpbGl0eUlzSWdub3JlZF0g KyA1NgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9NDY2 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