Merged revisions 80031 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r80031 | victor.stinner | 2010-04-13 13:07:24 +0200 (mar., 13 avril 2010) | 4 lines

  Issue #8383: pickle and pickletools use surrogatepass error handler when
  encoding unicode as utf8 to support lone surrogates and stay compatible with
  Python 2.x and 3.0
........
diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index ca11aa3..6ab75c7 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -469,7 +469,7 @@
         raise ValueError("unicodestring4 byte count < 0: %d" % n)
     data = f.read(n)
     if len(data) == n:
-        return str(data, 'utf-8')
+        return str(data, 'utf-8', 'surrogatepass')
     raise ValueError("expected %d bytes in a unicodestring4, but only %d "
                      "remain" % (n, len(data)))