Adding a custom User Defined Struct code class to a project causes the Editor to crash whenever a hot reload is performed on that project. Removing the custom User Defined Struct class allows hot reloads to complete successfully.
REGRESSION:
No
RESULT:
The Editor crashes while attempting to perform a hot reload after adding the new class. The Editor will also crash when performing any hot reload as long as the custom UserDefinedStruct class remains in the project, including when adding any additional code classes to the project.
EXPECTED:
The Editor continues to successfully complete hot reloads.
Assertion failed: bPrepareCppStructOpsCompleted [File:D:\Main-Builds\Stream\Engine\Source\Runtime\CoreUObject\Public\UObject/Class.h] [Line: 1116] GetCppStructOps: PrepareCppStructOps() has not been called for class Default__MyUserDefinedStruct UE4Editor_Core!FDebug::AssertFailed() [d:\main-builds\stream\engine\source\runtime\core\private\misc\assertionmacros.cpp:349] UE4Editor_HotReload!FHotReloadModule::DoHotReloadInternal() [d:\main-builds\stream\engine\source\developer\hotreload\private\hotreload.cpp:914] UE4Editor_HotReload!UE4Function_Private::TFunctionRefCaller<<lambda_845f9b2944b03bbc30be1e1f4a8d7f4b>,void __cdecl(TMap<FString,FString,FDefaultSetAllocator,TDefaultMapKeyFuncs<FString,FString,0> > const & __ptr64,bool,enum ECompilationResult::Type)>::Call() [d:\main-builds\stream\engine\source\runtime\core\public\templates\function.h:245] UE4Editor_HotReload!FHotReloadModule::CheckForFinishedModuleDLLCompile() [d:\main-builds\stream\engine\source\developer\hotreload\private\hotreload.cpp:1916] UE4Editor_HotReload!FHotReloadModule::RecompileModulesAsync() [d:\main-builds\stream\engine\source\developer\hotreload\private\hotreload.cpp:1551] UE4Editor_HotReload!FHotReloadModule::RebindPackagesInternal() [d:\main-builds\stream\engine\source\developer\hotreload\private\hotreload.cpp:1163] UE4Editor_HotReload!FHotReloadModule::RebindPackages() [d:\main-builds\stream\engine\source\developer\hotreload\private\hotreload.cpp:1107] UE4Editor_GameProjectGeneration!GameProjectUtils::AddCodeToProject_Internal() [d:\main-builds\stream\engine\source\editor\gameprojectgeneration\private\gameprojectutils.cpp:3505] UE4Editor_GameProjectGeneration!GameProjectUtils::AddCodeToProject() [d:\main-builds\stream\engine\source\editor\gameprojectgeneration\private\gameprojectutils.cpp:1105] UE4Editor_GameProjectGeneration!SNewClassDialog::FinishClicked() [d:\main-builds\stream\engine\source\editor\gameprojectgeneration\private\snewclassdialog.cpp:1181] UE4Editor_GameProjectGeneration!TBaseSPMethodDelegateInstance<0,SNewClassDialog,0,TTypeWrapper<void> __cdecl(void)>::Execute() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327] UE4Editor_GameProjectGeneration!TBaseSPMethodDelegateInstance<0,SNewClassDialog,0,void __cdecl(void)>::ExecuteIfSafe() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:433] UE4Editor_AppFramework!SWizard::HandleFinishButtonClicked() [d:\main-builds\stream\engine\source\runtime\appframework\private\widgets\workflow\swizard.cpp:287] UE4Editor_AppFramework!TMemberFunctionCaller<SWizard,FReply (__cdecl SWizard::*)(void) __ptr64>::operator()<>() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegateinstanceinterface.h:165] UE4Editor_AppFramework!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SWizard,FReply (__cdecl SWizard::*)(void) __ptr64> >() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\tuple.h:134] UE4Editor_AppFramework!TBaseSPMethodDelegateInstance<0,SWizard,0,FReply __cdecl(void)>::Execute() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327] UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:537] UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:278] UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator()() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5013] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:239] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5002] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5469] UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5446] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsapplication.cpp:1698] UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsapplication.cpp:2120] UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsapplication.cpp:867] UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsapplication.cpp:714] user32 user32 UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:980] UE4Editor!FEngineLoop::Tick() [d:\main-builds\stream\engine\source\runtime\launch\private\launchengineloop.cpp:3008] UE4Editor!GuardedMain() [d:\main-builds\stream\engine\source\runtime\launch\private\launch.cpp:166] UE4Editor!GuardedMainWrapper() [d:\main-builds\stream\engine\source\runtime\launch\private\windows\launchwindows.cpp:134] UE4Editor!WinMain() [d:\main-builds\stream\engine\source\runtime\launch\private\windows\launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264] kernel32 ntdll
Head over to the existing Questions & Answers thread and let us know what's up.