Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!Apple.COM!lsr
From: lsr@Apple.COM (Larry Rosenstein)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Stale Pointers
Message-ID: <2588@internal.Apple.COM>
Date: 30 Jun 89 00:26:18 GMT
Sender: usenet@Apple.COM
Distribution: usa
Organization: Objects-R-Us,  Apple Computer, Inc.
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References:<2394@ur-cc.UUCP> <27101@coherent.com> <3232@portia.Stanford.EDU>

In article <3232@portia.Stanford.EDU> duggie@Jessica.stanford.edu (Doug 
Felt) writes:
> (This problem shows up often in Object Pascal as well, where the
> notational convenience of being able to use 'object.foo' instead of
> 'object^^.foo' leads one to forget that dereferencing is taking place.

But the Pascal compiler recognizes these cases and generates safe code (or 
gives you a compile-time error).  Specifically, object.foo := NewHandle(...) 
dereferences the object after the call to NewHandle.

Larry Rosenstein, Apple Computer, Inc.
Object Specialist

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