This is a slightly trending crash after the 4.17.2 hotfix, although it has occurred since 4.17.0. Users have not provided any description of their actions when the crash occurred.
The callstack is very similar to [Link Removed], except for the FScriptArray::ResizeTo function. And the source context is different.
Source Context
75 void* FMallocTBB::Realloc( void* Ptr, SIZE_T NewSize, uint32 Alignment )
76 {
77 IncrementTotalReallocCalls();
78
79 MEM_TIME(MemTime -= FPlatformTime::Seconds())
80 #if UE_BUILD_DEBUG || UE_BUILD_DEVELOPMENT
81 SIZE_T OldSize = 0;
82 if (Ptr)
83 {
84 ***** OldSize = scalable_msize(Ptr);
85 if (NewSize < OldSize)
86 {
87 FMemory::Memset((uint8*)Ptr + NewSize, DEBUG_FILL_FREED, OldSize - NewSize);
88 }
89 }
repro steps currently unknown
Access violation - code c0000005 (first/second chance not available) UE4Editor_Core!rml::internal::Block::findObjectSize() UE4Editor_Core!FMallocTBB::Realloc() [malloctbb.cpp:85] UE4Editor_Core!FMemory::Realloc() [fmemory.inl:48] UE4Editor_CoreUObject!FScriptArray::ResizeTo() [scriptarray.h:200] UE4Editor_CoreUObject!UArrayProperty::DestroyValueInternal() [propertyarray.cpp:483] UE4Editor_CoreUObject!UObject::DestroyNonNativeProperties() [blueprintsupport.cpp:2185] UE4Editor_CoreUObject!UObject::FinishDestroy() [obj.cpp:742] UE4Editor_CoreUObject!UObject::ConditionalFinishDestroy() [obj.cpp:935] UE4Editor_CoreUObject!IncrementalPurgeGarbage() [garbagecollection.cpp:977] UE4Editor_CoreUObject!CollectGarbageInternal() [garbagecollection.cpp:1509] UE4Editor_CoreUObject!CollectGarbage() [garbagecollection.cpp:1533] UE4Editor_Kismet!FBlueprintCompilationManagerImpl::CompileSynchronouslyImpl() [blueprintcompilationmanager.cpp:208] UE4Editor_UnrealEd!FKismetEditorUtilities::CompileBlueprint() [kismet2.cpp:750] UE4Editor_Kismet!FBlueprintEditor::Compile() [blueprinteditor.cpp:3291] UE4Editor_Kismet!FBlueprintEditor::ReparentBlueprint_NewParentChosen() [blueprinteditor.cpp:2800] UE4Editor_Kismet!FBlueprintGlobalOptionsDetails::OnClassPicked() [blueprintdetailscustomization.cpp:5158] UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintGlobalOptionsDetails,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_ClassViewer!SClassViewer::OnClassViewerSelectionChanged() [sclassviewer.cpp:2434] UE4Editor_ClassViewer!TBaseSPMethodDelegateInstance<0,SClassViewer,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_ClassViewer!TBaseSPMethodDelegateInstance<0,SClassViewer,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_ClassViewer!TBaseDelegate<void,TSharedPtr<FClassViewerNode,0>,enum ESelectInfo::Type>::ExecuteIfBound() [delegatesignatureimpl.inl:624] UE4Editor_ClassViewer!SListView<TSharedPtr<FClassViewerNode,0> >::Private_SignalSelectionChanged() [slistview.h:725] UE4Editor_ClassViewer!STableRow<TSharedPtr<FString,0> >::OnMouseButtonUp() [stablerow.h:474] UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator() [slateapplication.cpp:5199] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [slateapplication.cpp:232] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5188] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5690] UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5670] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1718] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2161] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:881] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:721] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3151] 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-50486 in the post.
| 1 |
| Component | UE - Gameplay - Blueprint |
|---|---|
| Affects Versions | 4.17, 4.17.2 |
| Target Fix | 4.18 |
| Created | Sep 28, 2017 |
|---|---|
| Resolved | Jan 30, 2018 |
| Updated | Dec 10, 2018 |