79390 2012-02-23 12:37:22 -0800 REGRESSION (r108509-r108593 ): Crash clicking back button in WebKit::WebProcessProxy::didReceiveMessage 2012-02-26 13:12:11 -0800 1 1 1 Unclassified WebKit WebKit Misc. 528+ (Nightly build) Mac (Intel) OS X 10.7 RESOLVED INVALID Regression P1 Critical --- 0 kevin webkit-unassigned ap beidson sharikov.suba oldest_to_newest 563372 0 kevin 2012-02-23 12:37:22 -0800 Safari 5.2 Load a page and click to another page so that you can press the back button and then crash. When browser tries to re-open pages on restart it crashes again. Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 ??? 0x00007fff64bc8020 0 + 140734883463200 1 com.apple.WebKit2 0x0000000105638767 WebKit::WebProcessProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) + 149 2 com.apple.WebKit2 0x00000001055bf02c WebKit::WebConnectionToWebProcess::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) + 194 3 com.apple.WebKit2 0x00000001055624f9 CoreIPC::Connection::dispatchMessage(CoreIPC::Connection::Message<CoreIPC::ArgumentDecoder>&) + 175 4 com.apple.WebKit2 0x0000000105563a05 CoreIPC::Connection::dispatchMessages() + 147 5 com.apple.WebCore 0x0000000106215e19 WebCore::RunLoop::performWork() + 89 6 com.apple.WebCore 0x00000001062162d7 WebCore::RunLoop::performWork(void*) + 71 7 com.apple.CoreFoundation 0x00007fff872d36e1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 8 com.apple.CoreFoundation 0x00007fff872d2f4d __CFRunLoopDoSources0 + 253 9 com.apple.CoreFoundation 0x00007fff872f9d39 __CFRunLoopRun + 905 10 com.apple.CoreFoundation 0x00007fff872f9676 CFRunLoopRunSpecific + 230 11 com.apple.HIToolbox 0x00007fff922e331f RunCurrentEventLoopInMode + 277 12 com.apple.HIToolbox 0x00007fff922ea51b ReceiveNextEventCommon + 181 13 com.apple.HIToolbox 0x00007fff922ea456 BlockUntilNextEventMatchingListInMode + 62 14 com.apple.AppKit 0x00007fff880ccf5d _DPSNextEvent + 659 15 com.apple.AppKit 0x00007fff880cc861 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 135 16 com.apple.Safari.framework 0x00007fff8f692979 -[BrowserApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 162 17 com.apple.AppKit 0x00007fff880c919d -[NSApplication run] + 470 18 com.apple.AppKit 0x00007fff88347b88 NSApplicationMain + 867 19 com.apple.Safari.framework 0x00007fff8f84ce12 SafariMain + 166 20 com.apple.Safari 0x0000000104fcaf2c 0x104fca000 + 3884 564763 1 ap 2012-02-24 16:49:34 -0800 Please file bugs about unreleased version of Safari via <http://bugreport.apple.com>. Also, please note that nightly builds are only designed to work with the latest released version of Safari. 564771 2 kevin 2012-02-24 17:06:28 -0800 Hmm, but nightly was working until that build. Still seems important that something changed to introduce an issue to the next Safari from a nightly build update. 564775 3 beidson 2012-02-24 17:12:23 -0800 (In reply to comment #2) > Hmm, but nightly was working until that build. Still seems important that something changed to introduce an issue to the next Safari from a nightly build update. The WebKit project strives to remain backwards compatible with *released* software, not unreleased software. You're using an unreleased version of Safari. 565187 4 ap 2012-02-26 13:12:11 -0800 *** Bug 79557 has been marked as a duplicate of this bug. ***