1 files changed, 0 insertions, 6 deletions
diff --git a/vm.c b/vm.c
index 36d5c8b42a..0ae5c45f70 100644
--- a/vm.c
+++ b/vm.c
@@ -2278,11 +2278,6 @@ vm_define_method(rb_thread_t *th, VALUE obj, ID id, VALUE iseqval,
     rb_iseq_t *miseq;
     GetISeqPtr(iseqval, miseq);
 
-    if (miseq->klass) {
-	iseqval = rb_iseq_clone(iseqval, 0);
-	GetISeqPtr(iseqval, miseq);
-    }
-
     if (NIL_P(klass)) {
 	rb_raise(rb_eTypeError, "no class/module to add method");
     }
@@ -2293,7 +2288,6 @@ vm_define_method(rb_thread_t *th, VALUE obj, ID id, VALUE iseqval,
     }
 
     /* dup */
-    RB_OBJ_WRITE(miseq->self, &miseq->klass, klass);
     miseq->defined_method_id = id;
     rb_add_method_iseq(klass, id, iseqval, cref, visi);