* encoding.c (rb_enc_replicate): replica of dummy is a dummy.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14969 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Wed Jan  9 22:03:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* encoding.c (rb_enc_replicate): replica of dummy is a dummy.
+
 Wed Jan  9 20:35:42 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 
 	* lib/webrick/httprequest.rb: supprt X-Forwarded-* header fields.

encoding.c

@@ -207,6 +207,7 @@ set_base_encoding(int index, rb_encoding *base)
     VALUE enc = rb_enc_from_encoding(enc_table[index].enc);
 
     rb_ivar_set(enc, id_base_encoding, rb_enc_from_encoding(base));
+    if (ENC_DUMMY_P(base)) FL_SET(enc, ENC_DUMMY);
     return enc;
 }