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[Frama-c-discuss] Problem with predicate and location labels


  • Subject: [Frama-c-discuss] Problem with predicate and location labels
  • From: hollas at informatik.htw-dresden.de (Boris Hollas)
  • Date: Wed, 16 Feb 2011 16:28:08 +0100 (CET)

Consider the predicates below. The last one gives an error message

[kernel] user error: no label in the context. (\at or explicit label
missing?) in annotation.

What is wrong?

/*@ predicate equal{L1,L2}(integer k)  =  \at(k,L1) == \at(k,L2);
*/

typedef struct {
	int a;
} s_t;

/*@ predicate does_work{O, H}(s_t* this, integer k) = equal{O, H}(k);
    predicate doesnt_work{O, H}(s_t* this, integer k) = equal{O, H}(this->a);
*/

Regards,
Boris