Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!ncar!umigw!mthvax!dnelson
From: dnelson@mthvax.cs.miami.edu (Dru Nelson)
Newsgroups: comp.sys.apple2
Subject: Re: new() procedure in Pascal
Message-ID: <1990Sep11.131547.1259@mthvax.cs.miami.edu>
Date: 11 Sep 90 13:15:47 GMT
References: <5429.26ec0e29@vax5.cit.cornell.edu>
Distribution: comp
Organization: University of Miami Department of Mathematics & Computer Science
Lines: 27


 Hello,

>One more Pascal related question.  When should I call the following?
>var   p:pointer (or StringPtr, or anything pointer)
>begin
>....
>new(p);
>....
>end;
>In other words, when do you have to call new()?  Only when it is defined
>in 'var' headings?  Only global 'var' headings?  How about as value parameters
>of a procedure/function?  I was writing a program that kept crashing 
>(corrputed string) until I called new(mystringptr).  But I have made
>other programs before that do similar things and I never used new().  I
>am confused.  Someone please help me.
>Thanks
>-- 
>Joel Sumner                     GENIE:JOEL.SUMNER     These opinions are 

 I think the problem is that you didn't allocate the memory for the string.
 See, you only allocated a pointer, not the data area where the string is
 supposed to go (ie. a new call, or array)


-- 
%% Dru Nelson %% Miami, FL %% Internet:  dnelson@mthvax.cs.miami.edu  %%