perldelta for smartmatch, class constructors exiting with loop exits

Author: tonycoz

pod/perldelta.pod

@@ -390,6 +390,17 @@ Discussed in [GH #23171].
 Ensure cloning the save stack for fork emulation doesn't duplicate
 freeing the RExC state. [GH #23022]
 
+=item *
+
+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
 
 =head1 Known Problems