Backport issue #12973 itertools fix from 3.x.
diff --git a/Misc/NEWS b/Misc/NEWS
index b4dd215..c4f0cb0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -15,9 +15,9 @@
- Issue #12973: Fix overflow checks that invoked undefined behaviour in
int.__pow__. These overflow checks were causing int.__pow__ to produce
incorrect results with recent versions of Clang, as a result of the
- compiler optimizing the check away. Also fix similar overflow check
- in list_repeat (which caused test_list to fail with recent versions
- of Clang).
+ compiler optimizing the check away. Also fix similar overflow checks
+ in list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These
+ bugs caused test failures with recent versions of Clang.
- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase
titlecased and cased non-letter characters.