commit 1d927d4feba856cacc026a9167ba38c73a4e7657
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Tue Feb 20 14:06:58 2018 -0800
committer GitHub <noreply@github.com> Tue Feb 20 14:06:58 2018 -0800
tree 982f58f7aed1477ecff827a89660734787e2838f
parent bab4fe320ad2e24c1084fd57d2059ef342688aa9

bpo-31848: Fix broken error handling in Aifc_read.initfp() when the SSND chunk is not found (GH-5240)


Initialize self._ssnd_chunk so that aifc.Error is raised as intended,
not AttributeError.
(cherry picked from commit 80d20b918bd8a882043c493a7f958333ecb41727)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>

Lib/aifc.py

diff --git a/Lib/aifc.py b/Lib/aifc.py
index e51e8f8..3d2dc56 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -322,6 +322,7 @@
         else:
             raise Error('not an AIFF or AIFF-C file')
         self._comm_chunk_read = 0
+        self._ssnd_chunk = None
         while 1:
             self._ssnd_seek_needed = 1
             try: