* array.c (ary_make_hash): hide a Hash used internally.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22071 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Feb  5 11:37:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* array.c (ary_make_hash): hide a Hash used internally.
+
 Thu Feb  5 11:21:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (RUBY_LIB_VERSION): added for library version, to

array.c

@@ -2869,6 +2869,7 @@ ary_make_hash(VALUE ary1, VALUE ary2)
     VALUE hash = rb_hash_new();
     long i;
 
+    RBASIC(hash)->klass = 0;
     for (i=0; i<RARRAY_LEN(ary1); i++) {
 	rb_hash_aset(hash, RARRAY_PTR(ary1)[i], Qtrue);
     }