Re: [Flex-help] yy_start and yy_init uninitialized

[Will E. <wes...@gm...>]

Your parser is generated by bison, not flex. "3.0.5" is a bison version number, not a flex version number.

On Wednesday,  6 June 2018,  8:14 am +0530, Anand Akhare <ana...@gm...> wrote:

> In below code in generated parser, yy_init and yy_start is showing
> uninitialized value. irrelevant crash (at while ( /* CONSTCOND */ 1) is
> happening and below code doesn't get executed. My flex is now 3.0.5
> 
> > Can this be problem? Right now, after yy.c is generated, I am putting
> > these values zero above this code. Similarly for yy_buffer_stack and
> > buffer_stack_max.
> >  Scanner is with reentrant option and prefix option.
> > With prefix option, yyin is not getting prefix, is it true?
> > yyin can conflict from first instance of scanner with second instance of
> > scanner.
> >
> > This
> >         if ( !yyg->yy_init )
> >                 {
> >                 yyg->yy_init = 1;
> >
> > #ifdef YY_USER_INIT
> >                 YY_USER_INIT;
> > #endif
> >
> >                 if ( ! yyg->yy_start )
> >                         yyg->yy_start = 1;      /* first start state */
> >
> >                 if ( ! yyin )
> >                         yyin = stdin;
> >
> > >>>>               yyg->yy_buffer_stack = NULL;
> > >>>>                yyg->yy_buffer_stack_max = 0;
> >                 if ( ! YY_CURRENT_BUFFER ) {
> >                         prepyyensure_buffer_stack (yyscanner);
> >                         YY_CURRENT_BUFFER_LVALUE =
> >                                 prepyy_create_buffer(yyin,YY_BUF_SIZE
> > ,yyscanner);
> >                 }
> >
> >                 prepyy_load_buffer_state(yyscanner );
> >
> > Many Thanks,
> > Anand
> >
> >
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-- 
Will Estes
Flex Project Maintainer
wes...@gm...
https://github.com/westes/flex