[Flex-help] yy_start and yy_init uninitialized

[Anand A. <ana...@gm...>]

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
>
>