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[Frama-c-discuss] multiple behaviors in statement contracts

  • Subject: [Frama-c-discuss] multiple behaviors in statement contracts
  • From: jobredeaux at gatech.edu (Jobredeaux, Romain J)
  • Date: Tue, 18 Feb 2014 16:13:48 -0500 (EST)
  • In-reply-to: <1814476995.9770569.1392757979195.JavaMail.root@mail.gatech.edu>
Hi all,

I have a question on statement contracts. Am I correct in that a statement contract can 
only be applied to one specific behavior, but not multiple ones? I would like 
to write a local contract on a statement, but the contract should be different
for different behaviors, something like this:

/*@ behavior nominal:
       assumes ...
       ....
  @ behavior non_nominal:
       assumes ...
void foo (...)
{

...

for nominal:
    \requires ...
    \ensures ...

for non_nominal:
    \requires ...
    \ensures ...
{
/*code block the local contract applies to*/
}

...

}

My reading of the grammar is that this is currently impossible. Is there any easy way around
that?

Thanks in advance,

Romain Jobredeaux