Unreal Engine Issues

UHT doesn't warn that a class/structure size is larger than 65535

C# UHT fails to recognize delegates declared in another class's namespace

Repro Rate: 3/3 This issue occurs in the live build //UE5/Release-5.1 at CL 23058290. This issue has also been regression tested against //UE5/Release-5.0 at CL 20979098 and is confirmed to be a r ...

Dummy type required to parse delegates from a header

Delegate types aren't parsed unless the header file comes with a UCLASS/USTRUCT/UENUM ...

4.25 ECC_GameTraceChannels default parameter value results in compile error

Hidden enum entries cannot be used as default values for UFUNCTION parameters. When using any collisionchannel, the error "Hidden enum entries cannot be used as default values" is received. ...

int64 UProperty with ExposeOnSpawn meta tag won't compile.

int64 UProperty with ExposeOnSpawn meta tag won't compile from a C++ UUserWidget class. ...

UHT not properly handling deprecated UFUNCTION parameters

Compilation will fails with an error on TSubclassOf<UDEPRECATED_SomeData> ...

Mentioning "_Validate" suffix in code comments to function names causes Compiler error

When mentioning the _Validate Suffix in code comment, Visual Studio compiler throws an error. ...

Build Error when using ENUM without 0 entry

UHT fails to parse non-inlined UFUNCTION with RESTRICT keyword in parameter list

When you have a non-inlined ufunction, UHT fails to parse the restrict keyword in its parameter list. Note: The following compiles (notice that the only change is the use of the FORCEINLINE keywo ...

UHT always runs when building a code project using a binary Engine installation even if no code change has been made

When building a code project that was created with the binary Engine installed through the Launcher, UHT always runs even if no code changes have been made. This only occurs with a binary Engine ins ...