Re: huge input files, stack size exceeded??

[Joerg Hoffmann]

 Dear Mr. Eggert,
 
 cool, that works! Thanks very much!
 
 Just one more question: when I insert the lines you suggested into the .y 
source code, i.e.

#ifndef YYMAXDEPTH
#define YYMAXDEPTH 100000
#endif

#ifndef YYSTACK_ALLOC
#define YYSTACK_ALLOC malloc
#endif

#ifndef YYSTACK_FREE
#define YYSTACK_FREE free
#endif


in the resulting .tab.c code I get those lines, plus the sequence
 

 # if YYSTACK_USE_ALLOCA
 #  define YYSTACK_ALLOC alloca
 # else
 #  ifndef YYSTACK_USE_ALLOCA
 #   if defined (alloca) || defined (_ALLOCA_H)
 #    define YYSTACK_ALLOC alloca
 #   else
 #    ifdef __GNUC__
 #     define YYSTACK_ALLOC __builtin_alloca
 #    endif
 #   endif
 #  endif
 # endif
 
 # ifdef YYSTACK_ALLOC
    /* Pacify GCC's `empty if-body' warning. */
 #  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
 # else
 #  if defined (__STDC__) || defined (__cplusplus)
 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #   define YYSIZE_T size_t
 #  endif
 #  define YYSTACK_ALLOC malloc
 #  define YYSTACK_FREE free
 # endif
 #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
 
 
When I changed this by hand, the bug was fixed. But of course I'd rather
not have to go into the .tab.c files every time I make the software.

Is there a way to make Bison NOT generate this definition block?

Many thanks again,
Joerg Hoffmann






Paul Eggert wrote:
> Joerg Hoffmann <address@hidden> writes:
>
> > #0  0x08064744 in ops_pddlparse () at scan-ops_pddl.tab.c:1070
> > 1070            YYSTACK_RELOCATE (yyss);
> >   
>
> Most likely your hosts has an inadequate check for stack overflow,
> i.e. when you call alloca with a large number, it will return a
> bad pointer.
>
> If my guess is right, try doing this:
>
> #define YYSTACK_ALLOC malloc
> #define YYSTACK_FREE free
>
> This will cause the parser to use 'malloc' and 'free' rather than the
> inadequate 'alloca' implementation.