Re: Unexpected C Parsing Conflict

pocm@soton.ac.uk (Paulo Jorge de O. C. de Matos)
Sat, 26 Apr 2008 12:27:40 +0100

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Related articles
Unexpected C Parsing Conflict pocm@soton.ac.uk (2008-04-25)
Re: Unexpected C Parsing Conflict pocm@soton.ac.uk (2008-04-26)
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From: pocm@soton.ac.uk (Paulo Jorge de O. C. de Matos)
Newsgroups: comp.compilers
Date: Sat, 26 Apr 2008 12:27:40 +0100
Organization: Aioe.org NNTP Server
References: 08-04-095
Keywords: C, parse
Posted-Date: 26 Apr 2008 13:05:23 EDT

pocm@soton.ac.uk (Paulo Jorge de O. C. de Matos) writes:


> I have found a conflict in parsing C99 which arises from the fact that
> after a mult_expr a '*' (according to bison) can come up which means
> that it can either reduce mult_expr or shift the '*' for yet another
> multiplication.
>
> Now, * comes up as a unary operator and in the pointer definition but
> I can't find how or where they can follow a multiplication. Can
> someone let me know either how to solve this shift/reduce conflict or
> give me a concrete example where a * comes after a multiplication and
> is not a multiplication operator?


I have been able in the meantime to solve the issue. I had missing a
comma in the initializer-list nonterminal symbol definition.


--
Paulo Jorge Matos - pocm at soton.ac.uk
http://www.personal.soton.ac.uk/pocm
PhD Student @ ECS
University of Southampton, UK



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