memory errors ....

[arun kv]

Hi All, 

I have implemented a parser using lex and yacc ,  my lex and yacc files are 
named parser.y and scanner.l 
(these files are compiled with flex++ and bison++  to make my parser compatible 
with C++) 
My parser is working fine but .... 
The issue is when I run my parser with purify (a memory detection tool ) .It 
gives out memory errors in the flex and bison generated  source codes 
(parser.cpp , parser.h and scanner.h )

The purify errors for the parser are : 
IPR :Invalid pointer read , IPW :Invalid pointer write , BSR: Beyond stack read 
error 
Shown by these variables in parser.cpp 
yystate
yyn    
yyssp  
yyvsp  
yyerrstatus    
yycharl

For detailed purify log please see the attached file. 
What I want to know is that, Is there any way in which I can control these 
variables form my lex and yacc files. 
Or how else I can fix these memory errors shown by purify. 
Best Regards 
Arun

parser.log
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