* string.c (rb_str_dup): reverted unneeded change. [ruby-dev:33634]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15397 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Feb  7 18:57:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* string.c (rb_str_dup): reverted unneeded change.  [ruby-dev:33634]
+
 Thu Feb  7 16:33:51 2008  Tanaka Akira  <akr@fsij.org>
 
 	* io.c (io_reopen): don't change access mode for stdin, stdout and

string.c

@@ -564,7 +564,9 @@ static VALUE rb_str_replace(VALUE, VALUE);
 VALUE
 rb_str_dup(VALUE str)
 {
-    return rb_str_new3(str);
+    VALUE dup = str_alloc(rb_obj_class(str));
+    rb_str_replace(dup, str);
+    return dup;
 }