2 files changed, 5 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index f4c1b7f4db..1dfc7e9b3f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Dec  1 14:37:20 2013  Masaki Matsushita  <glass.saga@gmail.com>
+
+	* hash.c (rb_hash_to_a): specify array capa.
+
 Sun Dec  1 14:15:36 2013  Masaki Matsushita  <glass.saga@gmail.com>
 
 	* hash.c (rb_hash_rehash): fix to free new st_table when exception
diff --git a/hash.c b/hash.c
index d312325981..e1d682819e 100644
--- a/hash.c
+++ b/hash.c
@@ -1606,7 +1606,7 @@ rb_hash_to_a(VALUE hash)
 {
     VALUE ary;
 
-    ary = rb_ary_new();
+    ary = rb_ary_new_capa(RHASH_SIZE(hash));
     rb_hash_foreach(hash, to_a_i, ary);
     OBJ_INFECT(ary, hash);