Shift/reduce conflict in Yacc C grammar

HAJNAL Akos <hajnal@eik.bme.hu>
11 Jan 1998 23:53:50 -0500

From comp.compilers

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*Shift/reduce conflict in Yacc C grammar hajnal@eik.bme.hu (HAJNAL Akos)* (1998-01-11)**
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[1 later articles]

From:	HAJNAL Akos <hajnal@eik.bme.hu>
Newsgroups:	comp.compilers
Date:	11 Jan 1998 23:53:50 -0500
Organization:	Technical University of Budapest
Keywords:	C, parse, yacc, question, comment

Hi,
I downloaded the ANSI C grammar from
http://kbs.cs.tu-berlin.de/~jutta/c/ANSI-C-grammar-l.html,
http://kbs.cs.tu-berlin.de/~jutta/c/ANSI-C-grammar-y.html,
and compiled these in lex, and yacc.
The above grammar contains a shift/reduce conflict at
the definitions if-then, if-then-else.
For this reason I can not put actions within these rules,
i.e. for example after parsing the condition part.

My question is that, there is available a C grammar in lex/yacc
that does not contain any shift/reduce conflict?
Can such grammar exsist?

Thanks: Akos Hajnal
[I doubt you'll find any if-then-else constructs where yacc will let you
embed actions in any grammar. -John]
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