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bpo-45061: Detect Py_DECREF(Py_True) bug (GH-28089)

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Add a deallocator to the bool type to detect refcount bugs in C
extensions which call Py_DECREF(Py_True) or Py_DECREF(Py_False) by
mistake.
This commit is contained in:
Victor Stinner 2021-08-31 18:05:15 +02:00 • committed by GitHub
parent 9a7ec2fcde
commit 4300352000
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 14 additions and 7 deletions
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9
Objects/object.c
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@ -1560,14 +1560,11 @@ none_repr(PyObject *op)
return PyUnicode_FromString("None");
}
/* ARGUSED */
static void _Py_NO_RETURN
none_dealloc(PyObject* ignore)
none_dealloc(PyObject* Py_UNUSED(ignore))
{
/* This should never get called, but we also don't want to SEGV if
* we accidentally decref None out of existence.
*/
Py_FatalError("deallocating None");
Py_FatalError("deallocating None likely caused by a refcount bug "
"in a C extension");
}
static PyObject *