1 files changed, 1 insertions, 0 deletions
diff --git a/transient_heap.c b/transient_heap.c
index 9dfd980e64..14e941a41a 100644
--- a/transient_heap.c
+++ b/transient_heap.c
@@ -599,6 +599,7 @@ transient_heap_ptr(VALUE obj, int error)
         break;
       case T_OBJECT:
         if (ROBJ_TRANSIENT_P(obj)) {
+            RUBY_ASSERT(!rb_shape_obj_too_complex(obj));
             ptr = ROBJECT_IVPTR(obj);
         }
         break;