Description

This is a common crash affecting users in 4.16 and has been occurring since at least 4.14 affecting more than 300 unique users.

User Descriptions

  • i made a macro called IsolateYaw and set the input to Rotator, Typed InRot in and compiling crashed the client. No autosave was happening or pending.

Source Context

 2879       void FBlueprintGraphArgumentLayout::OnArgNameChange(const FText& InNewText)
 2880       {
 2881       	bool bVerified = true;
 2882       
 2883       	FText ErrorMessage;
 2884       
 2885       	if (InNewText.IsEmpty())
 2886       	{
 2887       		ErrorMessage = LOCTEXT("EmptyArgument", "Name cannot be empty!");
 2888       		bVerified = false;
 2889       	}
 2890       	else
 2891       	{
 2892 ***** 		const FString& OldName = ParamItemPtr.Pin()->PinName;
 2893       		bVerified = GraphActionDetailsPtr.Pin()->OnVerifyPinRename(TargetNode, OldName, InNewText.ToString(), ErrorMessage);
 2894       	}
Steps to Reproduce

repro steps currently unknown

Callstack
Assertion failed: IsValid() [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 835]

UE4Editor_Kismet!FBlueprintGraphArgumentLayout::OnArgNameChange() [blueprintdetailscustomization.cpp:2893]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintGraphArgumentLayout,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintGraphArgumentLayout,0,void __cdecl() [delegateinstancesimpl.h:434]
UE4Editor_Slate!FSlateEditableTextLayout::EndEditTransaction() [slateeditabletextlayout.cpp:2805]
UE4Editor_Slate!FSlateEditableTextLayout::HandleKeyChar() [slateeditabletextlayout.cpp:745]
UE4Editor_Slate!SEditableText::OnKeyChar() [seditabletext.cpp:170]
UE4Editor_Slate!<lambda_1c1a6884130f88cc3a30cf556a098b76>::operator() [slateapplication.cpp:4524]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FCharacterEvent,<lambda_1c1a6884130f88cc3a30cf556a098b76> >() [slateapplication.cpp:239]
UE4Editor_Slate!FEventRouter::RouteAlongFocusPath<FEventRouter::FBubblePolicy,<lambda_1c1a6884130f88cc3a30cf556a098b76>,FCharacterEvent>() [slateapplication.cpp:221]
UE4Editor_Slate!FSlateApplication::ProcessKeyCharEvent() [slateapplication.cpp:4521]
UE4Editor_Slate!FSlateApplication::OnKeyChar() [slateapplication.cpp:4498]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1459]
UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2127]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:867]
UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:714]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3058]
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
ComponentGameplay - Blueprint Editor
Affects Versions4.144.154.16
Target Fix4.17
Fix Commit3545546
Main Commit3596628
Release Commit3545546
CreatedJul 19, 2017
ResolvedJul 21, 2017
UpdatedApr 27, 2018