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From: bliss@sp64.csrd.uiuc.edu (Brian Bliss)
Newsgroups: comp.compilers
Subject: Re: Questions about Yacc (YYMAXDEPTH)
Keywords: yacc
Message-ID: <1991Mar8.203107.1327@csrd.uiuc.edu>
Date: 8 Mar 91 20:31:07 GMT
References: <694@synopsys.COM>
Sender: compilers-sender@iecc.cambridge.ma.us
Reply-To: bliss@sp64.csrd.uiuc.edu (Brian Bliss)
Organization: Center for Supercomputing Research and Development
Lines: 15
Approved: compilers@iecc.cambridge.ma.us

In article <694@synopsys.COM>, srini@synopsys.Synopsys.COM (Srinivas
Raghvendra) writes:
|> I notice that Yacc uses a #define named YYMAXDEPTH and that this value has
|> been set at 150. 
|> 	(1) I notice that even for moderately nested constructs, this seems
|> 	insufficient. (I get a Yacc stack overflow).

If you get overflows, you are probably using too many right-recursive
productions in you grammar.  change these to left-recursive productions
and the stack won't grow without bound.  (i.e. lemme see your grammar).

bb
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