* eval.c (rb_mod_modfunc): should break if m has no super class.

  [ruby-dev:22498]

* backport changes from 1.9


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@5391 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index 6d88111a85..3161f4573e 100644
--- a/eval.c
+++ b/eval.c
@@ -7055,6 +7055,7 @@ rb_mod_modfunc(argc, argv, module)
 		break;		/* normal case: need not to follow 'super' link */
 	    }
 	    m = RCLASS(m)->super;
+	    if (!m) break;
 	}
 	rb_add_method(rb_singleton_class(module), id, body->nd_body, NOEX_PUBLIC);
     }