1 files changed, 1 insertions, 0 deletions
diff --git a/variable.c b/variable.c
index eaad6eb497..74d5b699b8 100644
--- a/variable.c
+++ b/variable.c
@@ -3517,6 +3517,7 @@ rb_cvar_set(VALUE klass, ID id, VALUE val)
         ent = ALLOC(struct rb_cvar_class_tbl_entry);
         ent->class_value = target;
         ent->global_cvar_state = GET_GLOBAL_CVAR_STATE();
+        ent->cref = 0;
         rb_id_table_insert(rb_cvc_tbl, id, (VALUE)ent);
         RB_DEBUG_COUNTER_INC(cvar_inline_miss);
     }