1 files changed, 3 insertions, 2 deletions
diff --git a/gc.c b/gc.c
index 71a3f032ad..fbdb354af6 100644
--- a/gc.c
+++ b/gc.c
@@ -2279,7 +2279,7 @@ obj_free(rb_objspace_t *objspace, VALUE obj)
         }
 #endif
         if (/* RHASH_AR_TABLE_P(obj) */ !FL_TEST_RAW(obj, RHASH_ST_TABLE_FLAG)) {
-            ar_table *tab = RHASH(obj)->as.ar;
+            struct ar_table_struct *tab = RHASH(obj)->as.ar;
 
             if (tab) {
                 if (RHASH_TRANSIENT_P(obj)) {
@@ -3356,7 +3356,8 @@ obj_memsize_of(VALUE obj, int use_all_types)
 	break;
       case T_HASH:
         if (RHASH_AR_TABLE_P(obj)) {
-            size += sizeof(ar_table);
+            size_t rb_hash_ar_table_size();
+            size += rb_hash_ar_table_size();
 	}
         else {
             VM_ASSERT(RHASH_ST_TABLE(obj) != NULL);