%token-table doesn't seem to be working for C++?

[Derek Clegg]

Perhaps I’m doing something wrong, but it appears that, in C++, %token-table 
doesn’t work: instead of yytname, I only see yytname_. It also appears that 
YYNTOKENS, YYNNTS, YYNRULES, and YYNSTATES are not defined, contrary to the 
documentation. Am I missing something, or is this broken?

Thanks,
Derek