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

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Merged

serhiy-storchaka merged 3 commits into python:main from skirpichev:fix-docs-Py_ABS/141370

Nov 12, 2025

4 Doc/c-api/intro.rst

-Original file line number
+Diff line change
@@ -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
-          Expand Down