Re: Help with Yacc reduce/reduce conflict

glen herrmannsfeldt <gah@ugcs.caltech.edu>
Wed, 23 Jun 2010 18:25:34 +0000 (UTC)

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Related articles
Help with Yacc reduce/reduce conflict warren.toomey@gmail.com (Warren) (2010-06-21)
Re: Help with Yacc reduce/reduce conflict gah@ugcs.caltech.edu (glen herrmannsfeldt) (2010-06-23)
Re: Help with Yacc reduce/reduce conflict kym@sdf.lonestar.org (russell kym horsell) (2010-06-24)
Re: Help with Yacc reduce/reduce conflict paul@paulbmann.com (Paul Mann) (2010-07-01)
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From: glen herrmannsfeldt <gah@ugcs.caltech.edu>
Newsgroups: comp.compilers
Date: Wed, 23 Jun 2010 18:25:34 +0000 (UTC)
Organization: Aioe.org NNTP Server
References: 10-06-062
Keywords: yacc, parse
Posted-Date: 25 Jun 2010 16:24:20 EDT

Warren <warren.toomey@gmail.com> wrote:


> I'm writing a tool for novice Java students to submit their programs
> on-line and get back warnings about common mistakes, e.g. if (x = y),
> and assignments where the == operator is used instead of =.


I thought that Java made this C mistake illegal, except in
the case of boolean variables, with the requirement that the
expression be of type boolean.


Though I do like the simplicity of the C form, it is a convenient
source of hard to find bugs.


It might be that the compilers don't give an instructive
error for this case, though.


-- glen


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