Blurb it

aisk · aisk · commit cb4df3f25524 · 2026-06-21T23:23:28.000+09:00
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-06-21-23-23-24.gh-issue-151847.5uNKTL.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-06-21-23-23-24.gh-issue-151847.5uNKTL.rst
@@ -0,0 +1,3 @@
+When formatting a ``str`` or ``bytes`` with ``%``, passing ``-sys.maxsize -
+1`` as the width previously negated it, this is undefined behaviour in C. it
+now raises :exc:`OverflowError`.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	+When formatting a ``str`` or ``bytes`` with ``%``, passing ``-sys.maxsize -
	`2`	+1`` as the width previously negated it, this is undefined behaviour in C. it
	`3`	+now raises :exc:`OverflowError`.