http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46313
--- Comment #21 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-01-07
13:25:56 UTC ---
(In reply to comment #19)
> (In reply to comment #18)
> class(two_three), allocatable :: a1
> class(three), allocatable :: a2
> In the dump you can see that we end up with one vtab for both types.
The simplest run-time test is to add:
print *, same_type_as(a1,a2)
which should always be .FALSE. but is currently .TRUE.
Actually, also something else is odd: One finds in the dump a
D.1555 = a1._vptr->_hash == a2._vptr->_hash;
even with the patch for PR 41580. However, the check in
gfc_simplify_same_type_as which tests:
+ if ((a->ts.type == BT_CLASS || b->ts.type == BT_CLASS)
+ && !gfc_type_compatible (&a->ts, &b->ts)
+ && !gfc_type_compatible (&b->ts, &a->ts))
should have succeeded as the (declared) type of "a1" is not type compatible to
"a2" - nor vice versa.
