This is a trending crash coming out of the 4.18 release. It may be a regression.
User Descriptions
Source Context
66 if (!SerialNumbersMatch(ObjectItem)) 67 { 68 return true; 69 } 70 if (bThreadsafeTest) 71 { 72 return false; 73 } 74 return GUObjectArray.IsStale(ObjectItem, bEvenIfPendingKill); 75 } 76 77 UObject* FWeakObjectPtr::Get(/*bool bEvenIfPendingKill = false*/) const 78 { 79 // Using a literal here allows the optimizer to remove branches later down the chain. 80 ***** return Internal_Get(false); 81 } 82 83 UObject* FWeakObjectPtr::Get(bool bEvenIfPendingKill) const 84 { 85 return Internal_Get(bEvenIfPendingKill); 86 } 87 88 UObject* FWeakObjectPtr::GetEvenIfUnreachable() const 89 { 90 UObject* Result = nullptr; 91 if (Internal_IsValid(true, true)) 92 { 93 FUObjectItem* ObjectItem = GUObjectArray.IndexToObject(GetObjectIndex(), true); 94 Result = static_cast<UObject*>(ObjectItem->Object); 95 }
Import an FBX to create a skeleton, physics asset and mesh
Force delete the skeleton
Open the physics asset
Access violation - code c0000005 (first/second chance not available) UE4Editor_CoreUObject!FWeakObjectPtr::Get() [weakobjectptr.cpp:81] UE4Editor_Engine!FSoftObjectPtr::LoadSynchronous() [softobjectptr.h:51] UE4Editor_Engine!USkeleton::LoadAdditionalPreviewSkeletalMeshes() [skeleton.cpp:935] UE4Editor_Persona!FAnimationEditorPreviewScene::FAnimationEditorPreviewScene() [animationeditorpreviewscene.cpp:57] UE4Editor_Persona!FPersonaToolkit::CreatePreviewScene() [personatoolkit.cpp:89] UE4Editor_Persona!FPersonaModule::CreatePersonaToolkit() [personamodule.cpp:229] UE4Editor_PhysicsAssetEditor!FPhysicsAssetEditor::InitPhysicsAssetEditor() [physicsasseteditor.cpp:125] UE4Editor_PhysicsAssetEditor!FPhysicsAssetEditorModule::CreatePhysicsAssetEditor() [physicsasseteditormodule.cpp:58] UE4Editor_AssetTools!FAssetTypeActions_PhysicsAsset::OpenAssetEditor() [assettypeactions_physicsasset.cpp:39] UE4Editor_UnrealEd!FAssetEditorManager::OpenEditorForAsset() [asseteditormanager.cpp:361] UE4Editor_AssetTools!FAssetTypeActions_Base::AssetsActivated() [assettypeactions_base.h:50] UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [scontentbrowser.cpp:1942] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() [sassetview.cpp:3904] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_ContentBrowser!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0> >::ExecuteIfBound() [delegatesignatureimpl.inl:624] UE4Editor_ContentBrowser!SListView<TSharedPtr<FAssetViewItem,0> >::Private_OnItemDoubleClicked() [slistview.h:805] UE4Editor_ContentBrowser!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonDoubleClick() [stablerow.h:288] UE4Editor_Slate!<lambda_eeb33fd1b480e3cad58a1531d90d2e14>::operator() [slateapplication.cpp:5695] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_eeb33fd1b480e3cad58a1531d90d2e14> >() [slateapplication.cpp:234] UE4Editor_Slate!FSlateApplication::RoutePointerDoubleClickEvent() [slateapplication.cpp:5693] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() [slateapplication.cpp:5680] UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() [slateapplication.cpp:5656] UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1729] UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2171] UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:888] UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [windowsapplication.cpp:725] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [windowsplatformapplicationmisc.cpp:129] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3220] UE4Editor!GuardedMain() [launch.cpp:166] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134] UE4Editor!WinMain() [launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [exe_common.inl:253] kernel32!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-51916 in the post.
| 0 |
| Component | UE - Simulation - Physics |
|---|---|
| Affects Versions | 4.18 |
| Target Fix | 4.18.1 |
| Fix Commit | 3734857 |
|---|
| Created | Nov 2, 2017 |
|---|---|
| Resolved | Nov 3, 2017 |
| Updated | Apr 27, 2018 |
| 4447 - klorberg |