Hi Gaby,
> Hi Paolo, could we just call pp_cxx_expression instead of the split?
>   
Sure, if we can "export" the entire pp_cxx_expression we can also start
tidying a bit error.c, I started on that in the below, picking some safe
recent bits. Tested x86_64-linux. Is it ok?

By the way, in that context, I'm puzzled by the way pp_cxx_expression
deals with NON_DEPENDENT_EXPR. Is it calling itself or what?

Thanks,
Paolo.

///////////////