* hash.c (rb_any_hash): fixed performance issues with nil, true,

false as hash keys.  a patch from Matthias Waechter.  
  [ruby-core:21568]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21785 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Jan 27 03:43:34 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* hash.c (rb_any_hash): fixed performance issues with nil, true,
+	  false as hash keys.  a patch from Matthias Waechter.  
+	  [ruby-core:21568]
+
 Tue Jan 27 03:23:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* lib/mkmf.rb (create_makefile): should point correct path to

hash.c

@@ -69,6 +69,9 @@ rb_any_hash(VALUE a)
     switch (TYPE(a)) {
       case T_FIXNUM:
       case T_SYMBOL:
+      case T_NIL:
+      case T_FALSE:
+      case T_TRUE:
 	hnum = (int)a;
 	break;