perl -T -MMRO::Compat -e '
  {
    package Foo;
    use mro "c3";
    sub bar { shift->maybe::next::method }
  }

  my $class = "Foo" . substr($ENV{PATH},0,0);
  $class->isa("Baz");
  $class->bar
'
next::method/next::can/maybe::next::method cannot find enclosing method at /home/rabbit/perl5/perlbrew/perls/5.8.9/lib/site_perl/5.8.9/x86_64-linux-thread-multi/Class/C3/XS.pm line 66.