[gecode-users] ES_SUBSUMED_FIX error

Mikael Zayenz Lagerkvist zayenz at gmail.com
Wed Dec 3 13:59:17 CET 2008


Hi,

The program does not crash on my machine (Athlon 64, gcc 4.2.4, gecode
2.2.0). What kind of machine and compiler do you use?

Apart form that, I see one bug and a potential bug in your code.
First: the subscriptions are never canceled! This should be done
somewhere in the clean-up code. Either it could be done in the advisor
itself (as is done in the ViewAdvisor class [1]), or it could be done
in the class by iterating over the advisors in the council [2].

A potential bug is that the advise function is ill-formed, in that
both branches check the value of the MY-variable. Since you assign the
MY-variable first, the problem never occurs, but if you change the
order of the rel calls in the main function the advise function
returns with garbage as return vale.

Cheers,
Mikael

[1] http://www.gecode.org/gecode-doc-latest/classGecode_1_1ViewAdvisor.html
[2] http://www.gecode.org/gecode-doc-latest/classGecode_1_1Advisors.html

On Wed, Dec 3, 2008 at 1:07 PM, David Rijsman <David.Rijsman at quintiq.com> wrote:
> Attached you find a little sample in which I have written a peace of code in which I am trying to subsume my advisors and it is crashing on de second subsume invocation... Am I doing something wrong or missing something?
>
> thanks,
>
> David
>
>
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-- 
Mikael Zayenz Lagerkvist, http://www.ict.kth.se/~zayenz/




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