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| author | Victor Stinner <vstinner@python.org> | 2023-12-01 14:50:16 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-12-01 14:50:16 (GMT) |
| commit | 5f6ac2d88a49b8a7c764691365cd41ee6226a8d0 (patch) | |
| tree | 317433a73a42b5b11d85ff220d8238f76171d0f5 /Doc/c-api/refcounting.rst | |
| parent | c2982380f827e53057068eccf9f1a16b5a653728 (diff) | |
| download | cpython-5f6ac2d88a49b8a7c764691365cd41ee6226a8d0.zip cpython-5f6ac2d88a49b8a7c764691365cd41ee6226a8d0.tar.gz cpython-5f6ac2d88a49b8a7c764691365cd41ee6226a8d0.tar.bz2 | |
gh-110481: Fix Py_SET_REFCNT() integer overflow (#112174)
If Py_NOGIL is defined and Py_SET_REFCNT() is called with a reference
count larger than UINT32_MAX, make the object immortal.
Set _Py_IMMORTAL_REFCNT constant type to Py_ssize_t to fix the
following compiler warning:
Include/internal/pycore_global_objects_fini_generated.h:14:24:
warning: comparison of integers of different signs: 'Py_ssize_t'
(aka 'long') and 'unsigned int' [-Wsign-compare]
if (Py_REFCNT(obj) < _Py_IMMORTAL_REFCNT) {
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~
Diffstat (limited to 'Doc/c-api/refcounting.rst')
| -rw-r--r-- | Doc/c-api/refcounting.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Doc/c-api/refcounting.rst b/Doc/c-api/refcounting.rst index 68119a2..75e1d46 100644 --- a/Doc/c-api/refcounting.rst +++ b/Doc/c-api/refcounting.rst @@ -34,6 +34,9 @@ of Python objects. Set the object *o* reference counter to *refcnt*. + On :ref:`Python build with Free Threading <free-threading-build>`, if + *refcnt* is larger than ``UINT32_MAX``, the object is made :term:`immortal`. + This function has no effect on :term:`immortal` objects. .. versionadded:: 3.9 |