[gecode-users] Strange Error Concerning Memory

[Yunus Acikoz]

Hi Christian,

I can't compile in debug mode because of some other library (OR-tools) I'm
using. Instead I compile in RelWithDebInfo. Thanks anyway. I'll see if I
can provide more information later.

Thanks,
Yunus Acikoz

On Mon, Aug 8, 2016 at 5:28 PM, Christian Schulte <cschulte at kth.se> wrote:

> Hi Yunus,
>
>
>
> Really no idea. But what you could do: compile your application in
> Debugmode (that’s why the Gecode packages also contain debug variants of
> its dlls) and let it run under the Microsoft debugger. Please make sure
> that the debugger picks up the pdb symbol files (it should by default).
>
>
>
> At least you should see more with that!
>
>
>
> Cheers
>
> Christian
>
>
>
> --
>
> Christian Schulte, www.gecode.org/~schulte
>
> Professor of Computer Science, KTH, cschulte at kth.se
>
> Expert Researcher, SICS, cschulte at sics.se
>
>
>
> *From:* users-bounces at gecode.org [mailto:users-bounces at gecode.org] *On
> Behalf Of *Yunus Acikoz
> *Sent:* Monday, August 8, 2016 16:23
> *To:* users at gecode.org
> *Subject:* [gecode-users] Strange Error Concerning Memory
>
>
>
> Hello,
>
>
>
> I've implemented a model that is derived from Gecode::IntMinimizeSpace.
> The model contains a propagator which is derived from Gecode::Propagator.
> My propagator holds four integer ViewArrays, each having around 15000
> views. And each view in three of these arrays is assigned an advisor which
> is derived from Gecode::Advisor (making approximately 45000 advisors in
> total). This propagator also holds two integer vectors of size 15000 which
> I am using as labels in propagation. These two vectors are allocated from
> Gecode space. This little information might give an idea about the problem
> size.
>
>
>
> At some point while solving the model with the BAB search engine, an
> exception is thrown and stack trace only points to the Gecode dll and
> nothing more. I used Microsoft's Application Verifier tool, it gives the
> following output:
>
>
>
>
>
>                 <avrf:logEntry Time="2016-08-05 : 10:44:39"
> LayerName="Exceptions" StopCode="0x650" Severity="Error">
>
> <avrf:message>Attempt to execute code in non-executable memory (first
> chance).</avrf:message>
>
> <avrf:parameter1>24c4ab54e88 - Address being accessed.</avrf:parameter1>
>
> <avrf:parameter2>24c4ab54e88 - Code performing invalid
> access.</avrf:parameter2>
>
> <avrf:parameter3>fde92fe1f0 - Exception record. Use .exr to display
> it.</avrf:parameter3>
>
> <avrf:parameter4>fde92fdd00 - Context record. Use .cxr to display
> it.</avrf:parameter4>
>
> <avrf:stackTrace>
>
> <avrf:trace>vfbasics!+7ffab0f981b2 ( @ 0)</avrf:trace>
>
> <avrf:trace>vfbasics!+7ffab0f9787e ( @ 0)</avrf:trace>
>
> <avrf:trace>ntdll!MD5Update+a43 ( @ 0)</avrf:trace>
>
> <avrf:trace>ntdll!RtlImageNtHeaderEx+17b ( @ 0)</avrf:trace>
>
> <avrf:trace>ntdll!KiUserExceptionDispatcher+3a ( @ 0)</avrf:trace>
>
> <avrf:trace>????????+0000024C4AB54E88</avrf:trace>
>
> </avrf:stackTrace>
>
> </avrf:logEntry>
>
>
>
>
>
>
>
> I don't expect any detailed answer with this much information, but maybe
> you can tell me where to look or what kind of mistake I should look for in
> my code. Because I don't have any idea about what may be causing this.
>
>
>
> Thanks,
>
> Yunus Acikoz
>
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