This is a trending crash coming out of the 4.18 release. It may be a regression. Users have not provided any descriptions of their actions when the crash occurred.
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 }
No know step to validate the fix.
Access violation - code c0000005 (first/second chance not available) UE4Editor_CoreUObject!FWeakObjectPtr::Get() [weakobjectptr.cpp:81] UE4Editor_Landscape!ULandscapeInfo::GetLandscapeProxy() [landscape.cpp:1822] UE4Editor_Landscape!ULandscapeInfo::RecreateLandscapeInfo() [landscape.cpp:2163] UE4Editor_Landscape!ALandscapeProxy::PostEditMove() [landscapeedit.cpp:3264] UE4Editor_UnrealEd!FLevelEditorViewportClient::TrackingStopped() [leveleditorviewport.cpp:2836] UE4Editor_UnrealEd!FMouseDeltaTracker::EndTracking() [mousedeltatracker.cpp:306] UE4Editor_UnrealEd!FEditorViewportClient::StopTracking() [editorviewportclient.cpp:2515] UE4Editor_UnrealEd!FEditorViewportClient::InputKey() [editorviewportclient.cpp:2450] UE4Editor_UnrealEd!FLevelEditorViewportClient::InputKey() [leveleditorviewport.cpp:2533] UE4Editor_Engine!FSceneViewport::OnMouseButtonUp() [sceneviewport.cpp:579] UE4Editor_Slate!SViewport::OnMouseButtonUp() [sviewport.cpp:202] UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator() [slateapplication.cpp:5263] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [slateapplication.cpp:234] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5252] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5750] UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5730] UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1725] 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()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-51914 in the post.
| 4 |
| Component | UE - LD & Modeling - Terrain - Landscape |
|---|---|
| Affects Versions | 4.18, 4.18.1, 4.19 |
| Target Fix | 4.20 |
| Fix Commit | 4147013 |
|---|---|
| Main Commit | 4342567 |
| Created | Nov 2, 2017 |
|---|---|
| Resolved | Aug 17, 2018 |
| Updated | Sep 4, 2018 |
| 4447 - klorberg |