Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!stl!robobar!ronald
From: ronald@robobar.co.uk (Ronald S H Khoo)
Newsgroups: comp.lang.perl
Subject: Re: yacc stack overflow
Message-ID: <1991Mar14.080812.19719@robobar.co.uk>
Date: 14 Mar 91 08:08:12 GMT
References: <EMV.91Mar8010709@poe.aa.ox.com> <1991Mar13.012932.1710@NCoast.ORG> <21877@yunexus.YorkU.CA>
Organization: Robobar Ltd., Perivale, Middx., ENGLAND.
Lines: 37

oz@yunexus.yorku.ca (Ozan Yigit) writes:

> allbery@ncoast.ORG (Brandon S. Allbery KB8JRR) writes:
> >Yacc is one of those utilities with an arbitrary, compiled-in limit ...
> 
> Does that limit exist on PD byacc? [berkeley yacc] If not, maybe you
> would be better off using that one.

I quote from /usr/local/src/perl/perl.c:

    static char yysccsid[] = "@(#)yaccpar	1.8 (Berkeley) 01/20/90";

    #ifdef YYSTACKSIZE
    #ifndef YYMAXDEPTH
    #define YYMAXDEPTH YYSTACKSIZE
    #endif
    #else
    #ifdef YYMAXDEPTH
    #define YYSTACKSIZE YYMAXDEPTH
    #else
    #define YYSTACKSIZE 500
    #define YYMAXDEPTH 500
    #endif
    #endif
    [...]
    if (yyssp >= yyss + yystacksize - 1)
    {
        goto yyoverflow;
    }
    [...]
yyoverflow:
    yyerror("yacc stack overflow");

So it looks like that's the case too.  Ho hum.

-- 
Ronald Khoo <ronald@robobar.co.uk> +44 81 991 1142 (O) +44 71 229 7741 (H)