Issue #15478: Raising an OSError doesn't decode or encode the filename anymore

Pass the original filename argument to OSError constructor, instead of trying
to encode it to or decode it from the filesystem encoding. This change avoids
an additionnal UnicodeDecodeError on Windows if the filename cannot be decoded
from the filesystem encoding (ANSI code page).

1 files changed, 6 insertions, 0 deletions

diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 053ba562f8..ccc600537e 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -246,6 +246,12 @@ The following exceptions are the exceptions that are usually raised.
       :exc:`VMSError`, :exc:`socket.error`, :exc:`select.error` and
       :exc:`mmap.error` have been merged into :exc:`OSError`.
 
+   .. versionchanged:: 3.4
+
+      The :attr:`filename` attribute is now the original file name passed to
+      the function, instead of the name encoded to or decoded from the
+      filesystem encoding.
+
 
 .. exception:: OverflowError