* include/ruby/encoding.h (ENC_TO_ENCINDEX): suppress warnings.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26950 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Mar 16 14:06:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/encoding.h (ENC_TO_ENCINDEX): suppress warnings.
+
 Tue Mar 16 14:03:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (RSHIFT): parenthesize the argument of cast instead

include/ruby/encoding.h

@@ -198,7 +198,7 @@ RUBY_EXTERN VALUE rb_cEncoding;
 #define ENC_DUMMY_FLAG (1<<24)
 #define ENC_INDEX_MASK (~(~0U<<24))
 
-#define ENC_TO_ENCINDEX(enc)   ((enc)->ruby_encoding_index & ENC_INDEX_MASK)
+#define ENC_TO_ENCINDEX(enc) (int)((enc)->ruby_encoding_index & ENC_INDEX_MASK)
 
 #define ENC_DUMMY_P(enc) ((enc)->ruby_encoding_index & ENC_DUMMY_FLAG)
 #define ENC_SET_DUMMY(enc) ((enc)->ruby_encoding_index |= ENC_DUMMY_FLAG)