Backport rev. 51972:
Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
These tests should be improved. Hopefully this fixes variations when
flipping back and forth between fpdef and fplist.
diff --git a/Misc/NEWS b/Misc/NEWS
index 42b366d..165906e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -16,6 +16,8 @@
not being recognized as a keyword after, e.g., this statement:
from __future__ import division, with_statement
+- Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
+
- Fix %zd string formatting on Mac OS X so it prints negative numbers.
- Allow exception instances to be directly sliced again.