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defines it. * data/glr.c (yystos): New. (b4_yysymprint_generate, b4_yydestruct_generate): Invoke. (YYDSYMPRINT): New. (yyval): Don't define it, it is handled via M4. (yyrecoverParseError): Free verbosely the discarded symbols. * data/yacc.c (yysymprint): Remove, rather... (b4_yysymprint_generate): invoke. * data/c.m4 (b4_yysymprint_generate): New. Accept pointers as arguments, as opposed to the version from yacc.c. (b4_yydestruct_generate): Likewise. * tests/cations.at (Printers and Destructors): Use Bison directives instead of CPP macros. Don't rely on internal details.