glob is now safe. It used to produce "Attempt to free unreferenced glob
pointer" warnings and leak memory.
+=item *
+
+If subroutine redefinition (C<eval 'sub foo{}'> or C<newXS> for XS code)
+triggers a DESTROY method on the sub that is being redefined, and that
+method assigns a subroutine to the same slot (C<*foo = sub {}>), C<$_[0]>
+is no longer left pointing to a freed scalar. Now there is a memory leak
+instead. :-(
+
=back
=head1 Known Problems