Bug report

The following Python code throws aUnicodeEncodeError:

b'\xdc\xff'.decode('UTF-16BE','surrogateescape').encode('UTF-16','surrogateescape')

I would expect that it would returnb'\xdc\xff' instead.

Your environment

• CPython versions tested on: 3.10.4 from Fedora 35 repository
• Operating system and architecture: Fedora 35 on x86-64