Stub clog causes unused variable errors if the variables are only used in logs

[ThadHouse]

inline
void
QuicTraceEventStubVarArgs(
    _In_ const void* Fmt,
    ...
    )
{
    UNREFERENCED_PARAMETER(Fmt);
}
#define QuicTraceEvent(Name, ...) QuicTraceEventStubVarArgs("", __VA_ARGS__)

In msquic, we use the following trick to make sure the compiler sees all logs as referenced, rather then just defining away the macro.

[nibanks]

CLOG could/should be smarter than the above by individually UNREFERENCED_PARAMETER'ing each arg. One problem with the inline function approach is that on Linux that requires the function then to be declared in a different C file.

[ThadHouse]

We have a c file in clog, so theoretically thats fine. I don't know if its actually possible to just reference any variable number of parameters in strictly a macro context, especially since we can't generate different macros for different number of args but with the same name.