[ndnSIM] SIGSEGV when simply assigning one smart pointer to another?

[Spyridon (Spyros) Mastorakis]

Hi John,

as Ashlesh mentioned, please post a gdb backtrace, so that we can take a look.

Thanks,

Spyridon (Spyros) Mastorakis
Personal Website: http://cs.ucla.edu/~mastorakis/ <http://cs.ucla.edu/~mastorakis/>
Internet Research Laboratory
Computer Science Department
UCLA

> On Apr 10, 2017, at 1:20 PM, Ashlesh Gawande (agawande) <agawande at memphis.edu> wrote:
> 
> Perhaps you can post the gdb backtrace so that other people can take a look.
> 
> Ashlesh
> From: ndnSIM <ndnsim-bounces at lists.cs.ucla.edu> on behalf of John Baugh <jpbaugh at umich.edu>
> Sent: Monday, April 10, 2017 2:55:10 PM
> To: ndnsim
> Subject: Re: [ndnSIM] SIGSEGV when simply assigning one smart pointer to another?
>  
> I think maybe I'm mailing the list when no one is awake :)
> 
> If anyone has any ideas, I'd be very interested in hearing them.  This is a true Heisenbug
> 
> On Apr 9, 2017 11:36 PM, "John Baugh" <jpbaugh at umich.edu <mailto:jpbaugh at umich.edu>> wrote:
> Greetings all,
> 
> I posted this question before but received no responses, so I figured I'd give it another shot.
> 
> I've updated my Github repository with the updated code:
> profjpbaugh/ndnSIM-strategy1
> 
> The scenario in question is jpb-pop1.  The offending code seems to be when I pass my PopularityManager object to a set method, and then do the actual assignment.  I created the PopularityManager as an adapter object (and go-between) between the PStrat (strategy) and the PopularityPolicy (policy).  
> 
> In order to establish my definition of "popularity", I require the interest information (which PStrat has), and to control caching / replacement ultimately (which is in PopularityPolicy), I need this information about interests.
> 
> I am able to print (using cout) just before the assignment occurs, but it seems the segfault happens right then.
> 
> I used GDB and it does indeed say there's a SIGSEGV, but I cannot for the life of me figure out why this is happening.  It happens if I try to set the data member (popularityManager) to anything.
> 
> So I don't think it's the parameter (or argument) being passed in. 
> 
> Any assistance would be appreciated.  This may be some peculiar smart pointer issue, but I'm not sure.
> 
> 
> Thanks,
> 
> John
> 

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