Bison behavior incompatible with yacc

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Article #360

#360

From: Tom Friedel
Date: Sat, 12 Aug 1989 23:50

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After a very long time I have come to the conclusion that bison
may not work if you have useless productions in your grammar.
Yacc will simply ignore these, after warning the user.  Bison also
warns.

Mail me if you want my specific example.  

The doc's say that bison is upward compatible for properly written
grammar.  I don't beleive that a useless rule constitutes an 
improper grammar.

Thanks,

Tom



-- 
Tom Friedel             Public Access Unix BBS
tpf@prism.gatech.edu    ...gatech!emory!jdyx!tpf          
(404) 320-7624          (404) 321-5020

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!ctrsol!emory!jdyx!tpf

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!ctrsol!emory!jdyx!tpf
From: tpf@jdyx.UUCP (Tom Friedel)
Newsgroups: gnu.utils.bug
Subject: Bison behavior incompatible with yacc
Message-ID: <1989Aug12.235041.11546@jdyx.UUCP>
Date: 12 Aug 89 23:50:41 GMT
Distribution: usa
Organization: JDyx Enterprises (Atlanta GA)
Lines: 21