Index: subversion/libsvn_client/copy.c
===================================================================
--- subversion/libsvn_client/copy.c	(revision 14140)
+++ subversion/libsvn_client/copy.c	(working copy)
@@ -1048,6 +1048,15 @@
     }
   else
     {
+      if (src_is_url == dst_is_url)
+        {
+          if (strcmp (src_path, dst_path) == 0)
+            return svn_error_createf
+              (SVN_ERR_UNSUPPORTED_FEATURE, NULL,
+               _("Cannot copy path '%s' into itself"),
+               svn_path_local_style (src_path, pool));
+        }
+
       if (!src_is_url)
         {
           if (src_revision->kind != svn_opt_revision_unspecified
Index: subversion/tests/clients/cmdline/copy_tests.py
===================================================================
--- subversion/tests/clients/cmdline/copy_tests.py	(revision 14140)
+++ subversion/tests/clients/cmdline/copy_tests.py	(working copy)
@@ -1544,6 +1544,31 @@
 
 
 
+#----------------------------------------------------------------------
+# Test fix for issue 2224 - copying wc dir to itself causes endless
+# recursion
+def wc_copy_dir_to_itself(sbox):
+  "copy wc dir to itself"
+
+  sbox.build()
+  wc_dir = sbox.wc_dir
+  dnames = ['A','A/B']
+
+  for dirname in dnames:
+    dir_path = os.path.join(sbox.wc_dir, dirname)
+
+    # try to copy dir to itself
+    ## TODO need to kill the process after a couple of seconds
+    ## to prevent infinite wait
+    output, err = svntest.main.run_svn(1, 'copy', dir_path, dir_path)
+    error_msg = "svn: Cannot copy path '" + dir_path + "' into itself"
+    for line in err:
+      if line.find(error_msg) != -1:
+        break
+    else:
+      print "Failed to find '", error_msg, "' in: ", err
+      raise svntest.Failure
+
 ########################################################################
 # Run the tests
 
@@ -1577,6 +1602,7 @@
               url_to_non_existent_url_path,
               non_existent_url_to_url,
               old_dir_url_to_url,
+              wc_copy_dir_to_itself,
              ]
 
 if __name__ == '__main__':