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Article #4114

Check whether object has been allocated on heap

#4114
From: Felix I. Wyss
Date: Fri, 19 Apr 1996 15:01
27 lines
1820 bytes
Hello folks!

I'm sure this question has been asked many times but here is it anyway:

How can I determine whether an object has been instantiated by allocating
heap space ("new") or whether it is global/static/automatic or even a member
of an other object.
In other words: does a particular object have to be destroyed by calling
"delete" or not. 
Is there a proper (and portable) way to do determine that or is there a
proposal for the new C++ standard to achieve this functionality?
If not, what's about a function "is_dynamic(x)" (where 'x' is a pointer to
an object) that returns 1 for dynamically allocated objects and 0 in all
other cases.

I often came across situations where this information would have been very
useful. 

Thank you for your attention!

Felix (fwyss@linx.co.uk)
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From: "Felix I. Wyss" <fwyss@linx.co.uk>
Message-ID: <199604191448.PAA01868@bowmore.linx.co.uk>
X-Original-Date: Fri, 19 Apr 1996 15:46:39 +0100
Path: arc1-ca.pugleaf.net!in1.uu.net!bounce-back
Date: 19 Apr 96 15:01:35 GMT
Approved: fjh@cs.mu.oz.au
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Newsgroups: comp.std.c++
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Subject: Check whether object has been allocated on heap
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