diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-07-03-11-38-43.gh-issue-106008.HDf1zd.rst b/Misc/NEWS.d/next/Core and Builtins/2023-07-03-11-38-43.gh-issue-106008.HDf1zd.rst new file mode 100644 index 00000000000000..a57b892fd53242 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2023-07-03-11-38-43.gh-issue-106008.HDf1zd.rst @@ -0,0 +1,2 @@ +Fix possible reference leaks when failing to optimize comparisons with +:const:`None` in the bytecode compiler. diff --git a/Python/flowgraph.c b/Python/flowgraph.c index 213c993bb863a3..e159a4356dfe46 100644 --- a/Python/flowgraph.c +++ b/Python/flowgraph.c @@ -1377,9 +1377,9 @@ optimize_basic_block(PyObject *const_cache, basicblock *bb, PyObject *consts) goto error; } if (!Py_IsNone(cnt)) { + Py_DECREF(cnt); break; } - Py_DECREF(cnt); if (bb->b_iused <= i + 2) { break; }