Hello Hans Thanks for the reply.
So you need to assign config_spec a valid value somewhere, or write a rule that initializes $$ instead of the default rule.
Does that mean it is possible to redefine the default rule from "$$ = $1;" to e.g. "$$=NULL;" ?Can you tell me how ? I did not find anything like that in the documentation.
Thanks für your help. Best regards, Michael _______________________________________________ help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
