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From: alastair@geovision.UUCP (Alastair Mayer)
Newsgroups: comp.lang.c++
Subject: Re: another probably dumb question
Message-ID: <145@geovision.UUCP>
Date: Fri, 14-Aug-87 11:25:17 EDT
Article-I.D.: geovisio.145
Posted: Fri Aug 14 11:25:17 1987
Date-Received: Sun, 16-Aug-87 08:53:43 EDT
References: <10148@orchid.waterloo.edu>
Reply-To: alastair@geovision.UUCP (Alastair Mayer)
Distribution: comp
Organization: Geovision Corporation, Ottawa, Canada
Lines: 27

In article <10148@orchid.waterloo.edu> gamiddleton@orchid.waterloo.edu (Guy Middleton) writes:
>
>I seem to have a problem with destructors.  In this code here:
>  [..small program..]
>... the constructor for the string class is called one more time than the
>destructor.  If I change it to read:
>  [..slightly reorganized program..]
>then they get called the same number of times.  I realise I probably
>haven't provided enough information here, but I didn't want to post a huge
>message.  Does anybody have any idea what might be going on?
>__
> -Guy Middleton, University of Waterloo Institute for Computer Research

I have some suspicions, but nothing concrete enough to put forward without
trying it myself.  I think I need more info. (Could it have something
to do with that cast of NULL to string?)
  However, as a general comment on trying to figure out just what is
going on when wierd things start happening with my C++ code, I often
find it helpful to look at the C code that cfront is generating ( -F
option).  Once you make your way past what it does to identifiers and
inline code, you can sometimes (not always!) figure out why it's doing
whatever it did.
-- 
 Alastair JW Mayer     BIX: al
                      UUCP: ...!utzoo!dciem!nrcaer!cognos!geovision!alastair

Let's build a base on the Moon on our way to the asteroids - forget Mars.