2 files changed, 18 insertions, 0 deletions
diff --git a/src/class.c b/src/class.c
index cda7ce643..071d7aebe 100644
--- a/src/class.c
+++ b/src/class.c
@@ -1050,6 +1050,9 @@ mrb_class_new(mrb_state *mrb, struct RClass *super)
     mrb_check_inheritable(mrb, super);
   }
   c = boot_defclass(mrb, super);
+  if (super){
+    MRB_SET_INSTANCE_TT(c, MRB_INSTANCE_TT(super));
+  }
   make_metaclass(mrb, c);
 
   return c;
diff --git a/src/gc.c b/src/gc.c
index bf45ffcd3..93085db61 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -514,6 +514,12 @@ obj_free(mrb_state *mrb, struct RBasic *obj)
     mrb_free(mrb, ((struct RRange*)obj)->edges);
     break;
 
+#ifdef ENABLE_STRUCT
+  case MRB_TT_STRUCT:
+    mrb_free(mrb, ((struct RStruct*)obj)->ptr);
+    break;
+#endif
+
   case MRB_TT_DATA:
     {
       struct RData *d = (struct RData*)obj;
@@ -632,6 +638,15 @@ gc_gray_mark(mrb_state *mrb, struct RBasic *obj)
     break;
 #endif
 
+#ifdef ENABLE_STRUCT
+  case MRB_TT_STRUCT:
+    {
+      struct RStruct *s = (struct RStruct*)obj;
+      children += s->len;
+    }
+    break;
+#endif
+
   default:
     break;
   }