9781565920002 & yacc, 2nd Edition
by John R. Levine, Tony Mason, and Doug Brown


This errata page lists errors outstanding in the most recent printing.  
Errors that were corrected in the 9/99 printing and previous printings 
are NOT listed on this page.


Send error reports and technical questions to booktech@oreilly.com.  


This page was last modified on July 23, 2004.


Here's the key to the markup:

        [page-number]: serious technical mistake
        {page-number}: minor technical mistake
        <page-number>: important language/formatting problem
        (page-number): language change or minor formatting problem
        ?page-number?: reader question or request for clarification



Confirmed errors:


(xix) 3rd paragraph from bottom:
The line reads:

	The Glossary lists technical terms language and compiler theory.

It should read:

	The Glossary lists technical terms from language and compiler theory.


{17-18} IN PRINT: Example 1-7;
main()
{
	  do {
		yyparse();
             } while (!feof(yyin));
}

SHOULD BE:
main()
{
	while(!feof(yyin)) {
		yyparse();
	}
}

AUTHOR: Sometime in the past decade they changed f9781565920002 so that yyin isn't
initialized until the first call to the 9781565920002er.  The downloadable code is
correct.


{69}  in symlook() function;
char *p;
(not used, should be removed, although they don't hurt anything.)
(Same with page 75.)



(111) after first paragraph;
WHERE Foods.type = "fruit"
should be changed to
WHERE Foods.type = 'fruit';


2nd bit of code, 3rd line;
WHERE   Courses.flavor = Foods.flavor
should be:
WHERE   Courses.flavor = Foods.flavor;


{124} towards the bottom of page;
WHERE Foods.type = "fruit"
should be changed to
WHERE Foods.type = 'fruit';



{126} middle of page;

GRANT SELECT, UPDATE (address, telephone
      ON employees TO PUBLIC
should be:
GRANT SELECT, UPDATE (address, telephone
      ON employees TO PUBLIC;


GRANT ALL ON foods TO tony, dale WITH GRANT OPTION
should be:
GRANT ALL ON foods TO tony, dale WITH GRANT OPTION;


GRANT REFERENCES (flavor) ON Foods TO PUBLIC
should be:
GRANT REFERENCES (flavor) ON Foods TO PUBLIC;


{127} 2/3 down the page;
ORDER BY sequence ASC
should be:
ORDER BY sequence ASC;


{133} Change (or else INTO will be necessary in all SELECTs):

	select_statement:
	    SELECT opt_all_distinct selection
	    INTO target_commalist
	    table_exp
	    ;

to

	select_statement:
	    SELECT opt_all_distinct selection
	    INTO target_commalist
	    table_exp
	    |
	// manually added (faisal)
	    SELECT opt_all_distinct selection
	    table_exp
	  ;


(135) last line;
HAVING COUNT(*) >=3
should be:
HAVING COUNT(*) >=3;


{157}  Example 6-1;
extern int *myinputlim; /* end of data */

should be changed to

extern char *myinputlim; /* end of data */



{315} reader comment regarding a change made in the 9/99 reprint:
The correction said to replace "COMPARISON" with "=". 

I don't think this change is warranted. The change of "=" to COMPARISON in 
assignments would allow the following (incorrect) SQL statements:

    	UPDATE T1 SET C1 < NULL WHERE C1 >= 23

The "<" is wrong here and should generate a syntax error. The grammar as
corrected says its right.  Please put back the "=" (or better still add a
token, say ASSIGN, and merge it with the COMPARISON processing).  This would
also reverse the change on line 321.