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[Frama-c-discuss] Frama-C: Detecting unreachable code? (Dharmalingam Ganesan)

  • Subject: [Frama-c-discuss] Frama-C: Detecting unreachable code? (Dharmalingam Ganesan)
  • From: loic.correnson at cea.fr (Loïc Correnson)
  • Date: Mon, 27 Jan 2014 11:29:52 +0100
  • In-reply-to: <B517F47C2F6D914AA8121201F9EBEE6701C76682E22E@Mail1.FCMD.local>
  • References: <mailman.29.1390647739.11169.frama-c-discuss@lists.gforge.inria.fr> <8A90FE65-2C00-487C-9A30-5A629286B2E9@fokus.fraunhofer.de> <B517F47C2F6D914AA8121201F9EBEE6701C76682E22E@Mail1.FCMD.local>
You are absolutely right.
It is clear that Frama-C lacks from smoke detectors. I?ve read and heard many interesting works on this subject, and it would be surely a good idea to implement some of them. Just need to find some manpower around? ;-)
L.

Le 25 janv. 2014 ? 16:27, Dharmalingam Ganesan <dganesan at fc-md.umd.edu> a ?crit :

> Hi,
> 
> Yes, it does satisfy the contract. However, if there is a conditional statement which is always true then it is good to get feedback on that. It is a programming error most likely...
> 
> Best regards,
> Dharma
> 
> -----Original Message-----
> From: frama-c-discuss-bounces at lists.gforge.inria.fr [mailto:frama-c-discuss-bounces at lists.gforge.inria.fr] On Behalf Of Gerlach, Jens
> Sent: Saturday, January 25, 2014 6:31 AM
> To: Discussion Discussion
> Subject: Re: [Frama-c-discuss] Frama-C: Detecting unreachable code? (Dharmalingam Ganesan)
> 
> Hello Dharma,
> 
> I think your function satisfies its contract.
> So, what shall Frama-C do?
> 
> Maybe, your issue is that the function also satisfies the following simpler contract?
> 
> Jens
> 
> int MAX_VALUE = 100;
> 
> float x = 0.0;
> 
> int status = 0;
> 
> /*@
>  requires MAX_VALUE == 100;
>  assigns status;
>  ensures status == -1;
> */
> int main()
> {
> 
>  if((x > MAX_VALUE) ||
>     (x <= MAX_VALUE))
>  {
>     status = -1;
>  }
> }
> 
> 
> 
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