1 files changed, 8 insertions, 1 deletions
diff --git a/iseq.c b/iseq.c
index d6644f220f..c26850c045 100644
--- a/iseq.c
+++ b/iseq.c
@@ -177,9 +177,16 @@ set_relation(rb_iseq_t *iseq, const VALUE parent)
     /* set class nest stack */
     if (type == ISEQ_TYPE_TOP) {
 	/* toplevel is private */
-	iseq->cref_stack = NEW_BLOCK(th->top_wrapper ? th->top_wrapper : rb_cObject);
+	iseq->cref_stack = NEW_BLOCK(rb_cObject);
 	iseq->cref_stack->nd_file = 0;
 	iseq->cref_stack->nd_visi = NOEX_PRIVATE;
+	if (th->top_wrapper) {
+	    NODE *cref = NEW_BLOCK(th->top_wrapper);
+	    cref->nd_file = 0;
+	    cref->nd_visi = NOEX_PRIVATE;
+	    cref->nd_next = iseq->cref_stack;
+	    iseq->cref_stack = cref;
+	}
     }
     else if (type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
 	iseq->cref_stack = NEW_BLOCK(0); /* place holder */