From: Sergey B Kirpichev <skirpichev@gmail.com>
Date: Wed, 12 Nov 2025 09:50:44 +0000 (+0300)
Subject: gh-141370: document undefined behavior of Py_ABS() (GH-141439)
X-Git-Tag: v3.15.0a2~83
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20f53df07d42c495a08c73a3d54b8dd9098a62f0;p=thirdparty%2FPython%2Fcpython.git

gh-141370: document undefined behavior of Py_ABS() (GH-141439)
---

diff --git a/Doc/c-api/intro.rst b/Doc/c-api/intro.rst
index 6e1a9dcb3554..c76cc2f70ecc 100644
--- a/Doc/c-api/intro.rst
+++ b/Doc/c-api/intro.rst
@@ -121,6 +121,10 @@ complete listing.
 
    Return the absolute value of ``x``.
 
+   If the result cannot be represented (for example, if ``x`` has
+   :c:macro:`!INT_MIN` value for :c:expr:`int` type), the behavior is
+   undefined.
+
    .. versionadded:: 3.3
 
 .. c:macro:: Py_ALWAYS_INLINE