Description

This seems to be a new crash coming out of 4.18. It is not very widespread at the moment, but the callstack is very similar to [Link Removed], which was fixed for 4.18.0.

Users have not provided any descriptions of their actions when the crash occurred.

Source Context

 1109       	/**
 1110       	 * Converts this weak pointer to a shared pointer that you can use to access the object (if it
 1111       	 * hasn't expired yet.)  Remember, if there are no more shared references to the object, the
 1112       	 * returned shared pointer will not be valid.  You should always check to make sure the returned
 1113       	 * pointer is valid before trying to dereference the shared pointer!
 1114       	 *
 1115       	 * @return  Shared pointer for this object (will only be valid if still referenced!)
 1116       	 */
 1117       	FORCEINLINE TSharedPtr< ObjectType, Mode > Pin() const
 1118       	{
 1119 ***** 		return TSharedPtr< ObjectType, Mode >( *this );
 1120       	}
Steps to Reproduce

repro steps currently unknown

Callstack
Access violation - code c0000005 (first/second chance not available)

UE4Editor_PropertyEditor!TWeakPtr<SDetailSingleItemRow,0>::Pin() [sharedpointer.h:1120]
UE4Editor_PropertyEditor!SDetailSingleItemRow::OnArrayDrop() [sdetailsingleitemrow.cpp:175]
UE4Editor_PropertyEditor!TMemberFunctionCaller<SDetailSingleItemRow,FReply() [delegateinstanceinterface.h:165]
UE4Editor_PropertyEditor!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SDetailSingleItemRow,FReply() [tuple.h:497]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SDetailSingleItemRow,0,FReply __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_PropertyEditor!TBaseDelegate<FReply,FDragDropEvent const & __ptr64>::Execute() [delegatesignatureimpl.inl:537]
UE4Editor_PropertyEditor!STableRow<TSharedPtr<FDetailTreeNode,0> >::OnDrop() [stablerow.h:698]
UE4Editor_Slate!<lambda_74ecb22bb70e3f50c9d83154dfa5c688>::operator() [slateapplication.cpp:5300]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_74ecb22bb70e3f50c9d83154dfa5c688> >() [slateapplication.cpp:234]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5296]
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()

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Fixed
ComponentTools
Affects Versions4.18
Target Fix4.18.1
Fix Commit3738514
CreatedOct 30, 2017
ResolvedNov 6, 2017
UpdatedApr 27, 2018
Pull Requests
4447 - klorberg
View Jira Issue