Bug repor for bison

[Vikrant]

Hello,

 

We just figured that there is a bug with YYPRINT and YYDEBUG. We defined YYDEBUG which bison also defined in side on C code. After that we checked it once again check for yydebug value which has not been initialized to 1. Condition fails on linux - bison version 1.28 because it may take random value when you define it.

 

YYPRINT is not documented. Moreover we saw lines like follows in bison generated code.

 

#ifdef YYPRINT

      YYPRINT(stderr, yychar, yylval);

#endif

 

Could you please explain what it does.

 

Thank you.

 

Vikrant Kelkar

Harish Karnik

 

(Aumtech Inc)