Re: Multiple Parsers in the Same Program

[Patrick Bellasi]

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Hi again to all,
        I'm still here since I've found the solution of my doubt...


> Hi guys!!!
>
>       I've solved... but I can't explain to myself the reason for the solution
> I've found...

Well, looking inside the code of the generated parser (namely first_pars.c ), 
if we use the directive %name-prefix="first_", we find that:

/* If NAME_PREFIX is specified substitute the variables and functions
   names.  */
#define yyparse first_parse
#define yylex   first_lex
#define yyerror first_error
#define yylval  first_lval
#define yychar  first_char
#define yydebug first_debug
#define yynerrs first_nerrs

so, in the following code:

> this instead doesn't work!!!
>
> > That is:
> >
> > first_lex() {
> >     return yylex();
> > }
> >
> > and
> >
> > second_lex() {
> >     return yylex();
> > }


yylex() is just an alias fot first_lex()... that means endless loop!!!
This is the reason for the infinite growing of the stack (as seen by dgb's 
bt )... and the final SEGMENTATION FAULT!

to the next,
        Patrick


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