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[Frama-c-discuss] Logical annotations

Dear all,

Do the "logical annotations" supported by Frama-C/Jessie?

Running frama-c/jessie on one example of the ACSL reference manual
(removing double/int conversion issue - see below) I obtained errors.

Each time I tried to write "\sum" annotations, I obtain errors such as
"ignoring logic specification of function XXX" or other errors.

Do you have any idea about the reasons of such errors?

Can you provide me an example of \sum annotation that works.

Thank you,
Thomas Pareaud

/////////// C FILE //////////////
/*@ requires n >= 0 && \valid (t+(0..n-1)) ;
  @ ensures \result == \sum(0,n -1, \lambda integer k; t[k]);

int  array_sum (int t[], int n) {
  int i;
  int  s = 0;
  /*@ loop invariant 0 <= i <= n;
    @ loop invariant s == \sum(0, i-1, \lambda integer k; t[k]);
    @ loop variant n-i;
  for (i=0; i<n; i++) s += t[i];
  return s;

////////// ERRORS ////////////
[preprocessing] running gcc -C -E -I. -include
/usr/local/share/frama-c/jessie/jessie_prolog.h -dD test.c
Cleaning unused parts
Symbolic link
Starting semantical analysis
Starting Jessie translation
Fatal error: exception Assert_failure("src/jessie/", 564, 19)

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