Frama-C-discuss mailing list archives

This page gathers the archives of the old Frama-C-discuss archives, that was hosted by Inria's gforge before its demise at the end of 2020. To search for mails newer than September 2020, please visit the page of the new mailing list on Renater.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Frama-c-discuss] [kernel] user error: skipping file "selection.c" that has errors.

Hi,

The examples in directory examples-c/ of why are old examples using 
Caduceus syntax, a kind of predecessor of Frama-C.

Up-to-date examples can be found in directory tests/c/ instead, and also 
in several other places, e.g. "ACSL by examples", etc.

Sorry for the inconvenience.

- Claude

On 09/29/2014 05:35 AM, luoq at ustc.edu.cn wrote:
> Hi, everyone,
>
> I am a new user of Frama-c. I just installed Neon-20140301 and why 2.34
> on my Fedora 14 system with Ocaml compiler 4.01.0.
>
> Under no-GUI mode, install was successful.
>
> However, when I tried to run some examples from why2.34, I got several
> errors like the following:
> It seems that there is a compatibility problem.
>
> Is there any way to solve this?
>
>
> Thanks in advance!
>
>
> --------------------------------------------------------------------------------
>
> [user  /data/Down/why-2.34/examples-c/sorting]$ frama-c -jessie selection.c
> [kernel] preprocessing with "gcc -C -E -I.  -dD selection.c"
> selection.c:4:[kernel] user error: unexpected token ''
> [kernel] user error: skipping file "selection.c" that has errors.
> [kernel] Frama-C aborted: invalid user input.
> [user  /data/Down/why-2.34/examples-c/sorting]$ cat selection.c
>
> /* Selection sort */
>
> //@ type intmset
>
> //@ logic intmset mset(int t[],int i,int j) reads t[..]
>
> /*@ requires \valid_index(t,i) && \valid_index(t,j)
>    @ assigns  t[i],t[j]
>    @ ensures  t[i] == \old(t[j]) && t[j] == \old(t[i])
>    @*/
> void swap(int t[],int i,int j) {
>    int tmp = t[i];
>    t[i] = t[j];
>    t[j] = tmp;
> }
>
> /*@ predicate sorted(int t[],int i,int j) {
>    @   \forall int k; i <= k < j => t[k] <= t[k+1]
>    @ }
>    @*/
>
> /*@ requires n >= 1 && \valid_range(t,0,n-1)
>    @ assigns  t[0..n-1]
>    @ ensures  sorted(t,0,n-1) && mset(t,0,n-1) == \old(mset(t,0,n-1))
>    @*/
> void selection(int t[], int n) {
>    int i,j,min;
>    init:
>    /*@ // t[0..i-1] is already sorted
>      @ invariant
>      @   0 <= i <= n-1 &&
>      @   sorted(t, 0, i-1) &&
>      @   mset(t,0,n-1) == \at(mset(t,0,n-1),init) &&
>      @   \forall int k; \forall int l; 0 <= k < i =>
>      @          i <= l < n => t[k] <= t[l]
>      @ loop_assigns
>      @   t[0..n-1]
>      @ variant
>      @   n - i
>      @*/
>    for (i=0; i < n-1; i++) {
>      /* we look for the minimum of t[i..n-1] */
>      min = i;
>      /*@ invariant
>        @   i+1 <= j <= n &&
>        @   i <= min < n &&
>        @   \forall int k; i <= k < j => t[min] <= t[k]
>        @ variant
>        @   n - j
>        @*/
>      for (j = i + 1; j < n; j++) {
>        if (t[j] < t[min]) min = j;
>      }
>      /* we swap t[i] and t[min] */
>      swap(t,min,i);
>    }
> }
>
> [user  /data/Down/why-2.34/examples-c/sorting]$
>
>
>
>
>
> _______________________________________________
> Frama-c-discuss mailing list
> Frama-c-discuss at lists.gforge.inria.fr
> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/frama-c-discuss
>