* encoding.c (rb_enc_compatible): should swap encoding indexes too.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14209 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Dec 13 17:03:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* encoding.c (rb_enc_compatible): should swap encoding indexes too.
+
 Thu Dec 13 16:41:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* encoding.c (rb_enc_compatible): should not judge compatibility

encoding.c

@@ -390,8 +390,11 @@ rb_enc_compatible(VALUE str1, VALUE str2)
     }
     if (BUILTIN_TYPE(str1) != T_STRING) {
 	VALUE tmp = str1;
+	int idx0 = idx1;
 	str1 = str2;
 	str2 = tmp;
+	idx1 = idx2;
+	idx2 = idx0;
     }
     if (BUILTIN_TYPE(str1) == T_STRING) {
 	int cr1, cr2;