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)))