我正在使用webview加载网页，它只在10.7上崩溃，它在10.8上工作正常。我没有在代码中使用任何javascript调用。
任何猜测？
仅供参考，相同的URL工作正常是safari（10.7）。
我只看到差异， 10.8：webkit版本8536 10.7.5：webkit版本7534.57
0 libsystem_kernel.dylib 0x00007fff9901dbca __psynch_cvwait + 10
1 libsystem_c.dylib 0x00007fff972ab274 _pthread_cond_wait + 840
2 com.apple.AppKit 0x00007fff8ec0ffbc -[NSViewHierarchyLock _lockForWriting:handler:] + 547
3 com.apple.AppKit 0x00007fff8ec0af46 -[NSView setFrameSize:] + 350
4 com.apple.AppKit 0x00007fff8ece5c41 -[NSControl setFrameSize:] + 83
5 com.apple.WebCore 0x00007fff97e390d8 WebCore::ScrollView::platformSetContentsSize() + 66
6 com.apple.WebCore 0x00007fff97e39066 WebCore::ScrollView::setContentsSize(WebCore::IntSize const&) + 86
7 com.apple.WebCore 0x00007fff97e38e7e WebCore::FrameView::setContentsSize(WebCore::IntSize const&) + 56
8 com.apple.WebCore 0x00007fff97eacf2e WebCore::FrameView::adjustViewSize() + 164
9 com.apple.WebCore 0x00007fff97e9021f WebCore::FrameView::layout(bool) + 2071
10 com.apple.WebCore 0x00007fff97e8f940 WebCore::Document::updateLayoutIgnorePendingStylesheets() + 110
11 com.apple.WebCore 0x00007fff9811dd17 WebCore::Element::offsetHeight() + 21
12 com.apple.WebCore 0x00007fff9811dce1 WebCore::jsElementOffsetHeight(JSC::ExecState*, JSC::JSValue, JSC::Identifier const&) + 17
13 com.apple.JavaScriptCore 0x00007fff935476e4 JSC::JSValue::get(JSC::ExecState*, JSC::Identifier const&, JSC::PropertySlot&) const + 388
14 com.apple.JavaScriptCore 0x00007fff93547492 cti_op_get_by_id + 98
15 ??? 0x00004e3263a57cfa 0 + 85978327121146
16 com.apple.JavaScriptCore 0x00007fff93534c1a JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 826
17 com.apple.JavaScriptCore 0x00007fff935348cd JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 45
18 com.apple.WebCore 0x00007fff97f1315d WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 879
19 com.apple.WebCore 0x00007fff97f12d64 WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul>&) + 494
20 com.apple.WebCore 0x00007fff97e37623 WebCore::EventTarget::fireEventListeners(WebCore::Event*) + 85
21 com.apple.WebCore 0x00007fff97e37710 WebCore::Node::handleLocalEvents(WebCore::Event*) + 180
22 com.apple.WebCore 0x00007fff97e36d94 WebCore::EventDispatcher::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) + 832
23 com.apple.WebCore 0x00007fff97e36a18 WebCore::EventDispatchMediator::dispatchEvent(WebCore::EventDispatcher*) const + 40
24 com.apple.WebCore 0x00007fff97e36919 WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WebCore::EventDispatchMediator const&) + 41
25 com.apple.WebCore 0x00007fff97e3688f WebCore::Node::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) + 55
26 com.apple.WebCore 0x00007fff97e82918 WebCore::Document::finishedParsing() + 156
27 com.apple.WebCore 0x00007fff97e3b411 WebCore::HTMLDocumentParser::prepareToStopParsing() + 167
28 com.apple.WebCore 0x00007fff97e2a995 WebCore::DocumentWriter::endIfNotLoadingMainResource() + 107
29 com.apple.WebCore 0x00007fff97edf502 WebCore::FrameLoader::finishedLoading() + 72
30 com.apple.WebCore 0x00007fff97edf423 WebCore::MainResourceLoader::didFinishLoading(double) + 133
31 com.apple.Foundation 0x00007fff8e2ea63e ___NSURLConnectionDidFinishLoading_block_invoke_1 + 122
崩溃报告说，它在上面的线程0中崩溃了 更新了另一个线程转储，
0 libsystem_kernel.dylib 0x00007fff9901d82a __kill + 10
1 coop.plausible.CrashReporter 0x0000000100c91cfa fatal_signal_handler + 124
2 libsystem_c.dylib 0x00007fff972fbcfa _sigtramp + 26
3 com.apple.WebCore 0x00007fff97e13f7c WebCore::TimerBase::setNextFireTime(double) + 142
4 com.apple.WebCore 0x00007fff97e8fa46 WebCore::FrameView::layout(bool) + 62
5 com.apple.WebKit 0x00007fff94c36528 -[WebHTMLView layoutToMinimumPageWidth:height:maximumPageWidth:adjustingViewSize:] + 264
6 com.apple.AppKit 0x00007fff8f245c75 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 105
7 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
8 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
9 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
10 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
11 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
12 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
13 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
14 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
15 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
16 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
17 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
18 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
19 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
20 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
21 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
22 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
23 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
24 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
25 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
26 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
27 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
28 com.apple.AppKit 0x00007fff8ec0b414 __NSViewRecursionHelper + 25
29 com.apple.CoreFoundation 0x00007fff97bddcb4 CFArrayApplyFunction + 68
30 com.apple.AppKit 0x00007fff8f245e67 -[NSView _layoutSubtreeHeedingRecursionGuard:] + 603
31 com.apple.AppKit 0x00007fff8f245bd9 -[NSView layoutSubtreeIfNeeded] + 556
32 com.apple.AppKit 0x00007fff8f3c0c9a -[NSWindow(NSConstraintBasedLayout) layoutIfNeeded] + 190
33 com.apple.AppKit 0x00007fff8ec08735 -[NSView _sendViewWillDrawInRect:clipRootView:suppressRecursion:] + 54
34 com.apple.AppKit 0x00007fff8edb5f10 -[NSView(NSLayerKitGlue) _drawViewBackingLayer:inContext:drawingHandler:] + 998
35 com.apple.QuartzCore 0x00007fff943d60dc -[CALayer drawInContext:] + 145
36 com.apple.QuartzCore 0x00007fff943d5225 CABackingStoreUpdate_ + 3221
37 com.apple.QuartzCore 0x00007fff943d413a CA::Layer::display_() + 1086
38 com.apple.QuartzCore 0x00007fff943cc00a CA::Layer::display_if_needed(CA::Transaction*) + 560
39 com.apple.QuartzCore 0x00007fff943cafbf CA::Context::commit_transaction(CA::Transaction*) + 319
40 com.apple.QuartzCore 0x00007fff943cad3c CA::Transaction::commit() + 274
41 com.apple.AppKit 0x00007fff8edfffd1 -[NSUIHeartBeat _heartBeatThread:] + 1397
42 com.apple.Foundation 0x00007fff8e2dc72a -[NSThread main] + 68
43 com.apple.Foundation 0x00007fff8e2dc6a2 __NSThread__main__ + 1575