* iseq.c (rb_iseq_clone): should preserve cref_stack link.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@18497 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/iseq.c b/iseq.c
index f5dd37d26..84c3b741e 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1246,6 +1246,9 @@ rb_iseq_clone(VALUE iseqval, VALUE newcbase)
     }
     if (newcbase) {
 	iseq1->cref_stack = NEW_BLOCK(newcbase);
+	if (iseq0->cref_stack->nd_next) {
+	    iseq1->cref_stack->nd_next = iseq0->cref_stack->nd_next;
+	}
     }
 
     return newiseq;