perldelta for smartmatch, class constructors exiting with loop exits

Author: tonycoz

pod/perldelta.pod

@@ -366,7 +366,14 @@ manager will later use a regex to expand these into links.
 
 =item *
 
-XXX
+Smartmatch against a code reference that uses a loop exit such as
+C<last> would crash perl.  [GH #16608]
+
+=item *
+
+Class initializers and C<ADJUST> blocks, per L<perlclass>, that
+called C<last> or other loop exits would crash perl.  Same cause as
+for [GH #16608]
 
 =back