Unreal Engine Issues and Bug Tracker (UE-35037)

Description

The editor crashes when trying to set the text for a text block via a binding a if the text block is trying to set its text by referencing its current text setting.

Steps to Reproduce

Open the editor
Create a new widget blueprint
Add a text widget to the designer tab
Make the text widget a variable
Create binding for the text widget text
Create the blueprint in the attached image
Save and compile
Open the level blueprint
Add the widget to the viewport
Play in editor
Notice the editor crashes

Expected: The use would be given an error or the text would set
Result: The editor crashes

Callstack

UE4Editor_Core!FText::Rebuild() text.cpp:869 
UE4Editor_Core!FTextFormatter::Format() textformatter.cpp:895 
UE4Editor_Engine!UKismetTextLibrary::Format() kismettextlibrary.cpp:276 
UE4Editor_Engine!UKismetTextLibrary::execFormat() kismettextlibrary.h:81 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:697 
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() scriptcore.cpp:2126 
UE4Editor_CoreUObject!UObject::execLet() scriptcore.cpp:1925 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:922 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!FDynamicPropertyPath::GetValueRecursive<FText>() dynamicpropertypath.h:347 
UE4Editor_UMG!UTextBinding::GetTextValue() textbinding.cpp:47 
UE4Editor_UMG!UTextBinding::execGetTextValue() textbinding.h:10 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!TBaseUFunctionDelegateInstance<UObject,FText __cdecl() delegateinstancesimpl.h:127 
UE4Editor_Slate!TBaseDelegate<FText>::Execute() delegatesignatureimpl.inl:521 
UE4Editor_Slate!TAttribute<FText>::Get() attribute.h:135 
UE4Editor_UMG!UTextBlock::GetText() textblock.cpp:157 
UE4Editor_UMG!UTextBlock::execGetText() textblock.h:16 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:697 
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() scriptcore.cpp:2126 
UE4Editor_CoreUObject!UObject::execLet() scriptcore.cpp:1925 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:922 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!FDynamicPropertyPath::GetValueRecursive<FText>() dynamicpropertypath.h:347 
UE4Editor_UMG!UTextBinding::GetTextValue() textbinding.cpp:47 
UE4Editor_UMG!UTextBinding::execGetTextValue() textbinding.h:10 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!TBaseUFunctionDelegateInstance<UObject,FText __cdecl() delegateinstancesimpl.h:127 
UE4Editor_Slate!TBaseDelegate<FText>::Execute() delegatesignatureimpl.inl:521 
UE4Editor_Slate!TAttribute<FText>::Get() attribute.h:135 
UE4Editor_UMG!UTextBlock::GetText() textblock.cpp:157 
UE4Editor_UMG!UTextBlock::execGetText() textblock.h:16 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:697 
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() scriptcore.cpp:2126 
UE4Editor_CoreUObject!UObject::execLet() scriptcore.cpp:1925 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:922 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!FDynamicPropertyPath::GetValueRecursive<FText>() dynamicpropertypath.h:347 
UE4Editor_UMG!UTextBinding::GetTextValue() textbinding.cpp:47 
UE4Editor_UMG!UTextBinding::execGetTextValue() textbinding.h:10 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!TBaseUFunctionDelegateInstance<UObject,FText __cdecl() delegateinstancesimpl.h:127 
UE4Editor_Slate!TBaseDelegate<FText>::Execute() delegatesignatureimpl.inl:521 
UE4Editor_Slate!TAttribute<FText>::Get() attribute.h:135 
UE4Editor_UMG!UTextBlock::GetText() textblock.cpp:157 
UE4Editor_UMG!UTextBlock::execGetText() textblock.h:16 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:697 
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() scriptcore.cpp:2126 
UE4Editor_CoreUObject!UObject::execLet() scriptcore.cpp:1925 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:922 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_UMG!FDynamicPropertyPath::GetValueRecursive<FText>() dynamicpropertypath.h:347 
UE4Editor_UMG!UTextBinding::GetTextValue() textbinding.cpp:47

Community References

Crash TextData is nullptr when UMG TextWidget is bound

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Won't Fix

Component	UE - Editor - UI Systems
Affects Versions	4.12.5

Created	Aug 22, 2016
Resolved	Sep 6, 2016
Updated	May 2, 2018

UE-35037

If a user uses a binding to set the text of a Text widget by using the "Get Text" node on that same widget the editor will crash

If a user uses a binding to set the text of a Text widget by using the "Get Text" node on that same widget the editor will crash

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