[UE][Networking/RPC] Possible redundant check: RemoteFunctions->GetNumBits() >= 0 always true? (should be > 0?)

[JLiangJay]

In Unreal Engine source code, I noticed the following line:

cpp

const bool bHasRPCQueued = RemoteFunctions && RemoteFunctions->GetNumBits() >= 0;

GetNumBits() appears to represent the number of bits in the buffer, which should normally be non-negative. If that’s the case, the condition GetNumBits() >= 0 would always evaluate to true whenever RemoteFunctions is valid, making the check redundant.

Questions:

1. Are there any cases where GetNumBits() can return a negative value (e.g., error/sentinel), making >= 0 meaningful?

2. If not, is this a bug/typo and the intended logic should be GetNumBits() > 0 to indicate there is actually queued RPC data?

3. If it’s intentional, what is the rationale for using >= 0 here?