CURRENT OF refuses to use my cursor - why?

On Oracle 11.2

create or replace
procedure example
is
row TABLE1%ROWTYPE;
c1 sys_refcursor;
BEGIN
     open c1 for
          SELECT * from TABLE1 where foo = 1 order by prim_key FOR UPDATE SKIP LOCKED;

     LOOP FETCH c1 INTO row;
          EXIT WHEN c1%NOTFOUND;
               UPDATE TABLE1 SET
                    bar = 2
               WHERE CURRENT OF c1;
     END LOOP;
     CLOSE c1;
END;
/

Gives this error:

LINE/COL ERROR
-------- -----------------------------------------------------------------
11/4     PL/SQL: SQL Statement ignored
13/21    PL/SQL: ORA-00904: : invalid identifier
13/21    PLS-00413: identifier in CURRENT OF clause is not a cursor name

What's wrong? I guess it's something minor that I neglected.

Kind regards
David

xerces8 wrote:

If I use a slider like this explicit:
Is it in terms of the order of execution as if with a

Yes, and I see no reason to use ref cursor.

SY.

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