should be initialize jit_unit->cc_entries.

GC can invoke just after allocation of jit_unit->cc_entries so
it should be zero-cleared.

1 files changed, 3 insertions, 1 deletions

diff --git a/iseq.c b/iseq.c
index 25f45a767f..40be6c76c4 100644
--- a/iseq.c
+++ b/iseq.c
@@ -363,7 +363,9 @@ rb_iseq_mark(const rb_iseq_t *iseq)
             // TODO: move to mjit.c?
             for (unsigned int i=0; i<body->ci_size; i++) {
                 const struct rb_callcache *cc = body->jit_unit->cc_entries[i];
-                rb_gc_mark((VALUE)cc); // pindown
+                if (cc != NULL) {
+                    rb_gc_mark((VALUE)cc); // pindown
+                }
             }
         }
 #endif