diff options
| -rw-r--r-- | Objects/object.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Objects/object.c b/Objects/object.c index ae76e33e1f..2c8e823f05 100644 --- a/Objects/object.c +++ b/Objects/object.c @@ -454,9 +454,12 @@ _PyObject_IsFreed(PyObject *op) /* ignore op->ob_ref: its value can have be modified by Py_INCREF() and Py_DECREF(). */ #ifdef Py_TRACE_REFS - if (_PyMem_IsPtrFreed(op->_ob_next) || _PyMem_IsPtrFreed(op->_ob_prev)) { + if (op->_ob_next != NULL && _PyMem_IsPtrFreed(op->_ob_next)) { return 1; } + if (op->_ob_prev != NULL && _PyMem_IsPtrFreed(op->_ob_prev)) { + return 1; + } #endif return 0; } |