[3.13] gh-123484: Fix the debug offsets for PyLongObject (GH-123485) (#123499)

miss-islington · web-flow · commit 8ef277e5e92b · 2024-08-30T12:05:50.000Z
diff --git a/Include/internal/pycore_runtime_init.h b/Include/internal/pycore_runtime_init.h
@@ -117,8 +117,8 @@ extern PyTypeObject _PyExc_MemoryError;
             }, \
             .long_object = { \
                 .size = sizeof(PyLongObject), \
-                .lv_tag = offsetof(_PyLongValue, lv_tag), \
-                .ob_digit = offsetof(_PyLongValue, ob_digit), \
+                .lv_tag = offsetof(PyLongObject, long_value.lv_tag), \
+                .ob_digit = offsetof(PyLongObject, long_value.ob_digit), \
             }, \
             .bytes_object = { \
                 .size = sizeof(PyBytesObject), \
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-08-29-19-46-07.gh-issue-123484.rjUn_F.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-08-29-19-46-07.gh-issue-123484.rjUn_F.rst
@@ -0,0 +1,2 @@
+Fix ``_Py_DebugOffsets`` for long objects to be relative to the start of the
+object rather than the start of a subobject.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Fix ``_Py_DebugOffsets`` for long objects to be relative to the start of the
	`2`	`+object rather than the start of a subobject.`