* error.c (name_err_mesg_to_str): preserve encoding of inspection.

  [ruby-core:29948]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27615 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 14 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index a3692f5bef..7705b7062f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue May  4 18:51:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* error.c (name_err_mesg_to_str): preserve encoding of inspection.
+	  [ruby-core:29948]
+
 Tue May  4 18:38:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* test/fileutils/test_fileutils.rb (test_copy_stream):
diff --git a/error.c b/error.c
index 3fcd18478d..2cced9aa62 100644
--- a/error.c
+++ b/error.c
@@ -880,7 +880,7 @@ name_err_mesg_to_str(VALUE obj)
 	    break;
 	}
 	if (desc && desc[0] != '#') {
-	    d = rb_str_new2(desc);
+	    d = d ? rb_str_dup(d) : rb_str_new2(desc);
 	    rb_str_cat2(d, ":");
 	    rb_str_cat2(d, rb_obj_classname(obj));
 	}
diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index d7833b9d44..18ecb404be 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -304,4 +304,12 @@ end.join
     end
     assert(!e.success?)
   end
+
+  def test_nomethoderror
+    bug3237 = '[ruby-core:29948]'
+    str = "\u2600"
+    id = :"\u2604"
+    e = assert_raise(NoMethodError) {str.__send__(id)}
+    assert_equal("undefined method `#{id}' for #{str.inspect}:String", e.message, bug3237)
+  end
 end