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From:	"Stephano Mariani" <sk DOT ml AT btinternet DOT com>
To:	"'Fractal A.'" <fractala AT yahoo DOT com>,
	"'Randall R Schulz'" <rrschulz AT cris DOT com>, <cygwin AT cygwin DOT com>
Cc:	<cygwin AT cygwin DOT com>
Subject:	RE: Bison 1.30
Date:	Thu, 27 Dec 2001 09:51:32 -0000
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You need to define your own yyerror function. Bison uses it the report
an error.
It has the following prototype: void yyerror(char*s)
As for the rest, include <stdlib.h> and/or <stdio.h>, and perhaps some
others depending on the actions you used in your rules.
I have used bison 1.28, a LOT, and found no real problems other than
suboptimal code in some cases.

Stphano Mariani

PS: You can try bison-1.30-1 now, and see for yourself bison is not at
fault.

-----Original Message-----
From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On Behalf
Of Fractal A.
Sent: Wednesday, 26 December 2001 4:31
To: Randall R Schulz; cygwin AT cygwin DOT com
Cc: cygwin AT cygwin DOT com
Subject: Re: Bison 1.30


Hi,

Because the compiler (bison 1.28) appears to be working incorrectly, I
believe that a newer version of bison might solve the problem.  I don't
know why the "implicit declaration" error is occurring.  I don't know
what to do to solve it.  The arithmetic.lex and arithmetic.y files were
compiling properly before. 
When the other files started outputting the "implicit declaration"
error, it seems that everything stopped working correctly.  The error is
of the type "implicit declaration" of several different yy functions.
If you think of something to help, please let me know.  Thanks.

Examples of the error:  
Errors of this nature cause me to believe that the compiler is failing.

C:\cygwin2\c15>g++ -Wall -c -gstabs ch1-05.y.tab.c
/usr/share/bison.simple: In function `int yyparse()':
/usr/share/bison.simple:358: implicit declaration of function `int
yyerror(...)'

C:\cygwin2\ega>g++ -Wall -c -gstabs arithmetic.y.tab.c
/usr/share/bison.simple: In function `int yyparse()':
/usr/share/bison.simple:361: implicit declaration of function `int
free(...)'

=====
Fractal A.                    fractala AT yahoo DOT com

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