diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst b/Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst new file mode 100644 index 00000000000000..28c9a8465180db --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst @@ -0,0 +1 @@ +Fixed ``stacktop`` value on tracing entries to avoid corruption on garbage collection. diff --git a/Python/ceval_macros.h b/Python/ceval_macros.h index d7a8f0beeec872..d37e381c95c4a5 100644 --- a/Python/ceval_macros.h +++ b/Python/ceval_macros.h @@ -310,6 +310,7 @@ GETITEM(PyObject *v, Py_ssize_t i) { _PyFrame_SetStackPointer(frame, stack_pointer); \ int err = trace_function_entry(tstate, frame); \ stack_pointer = _PyFrame_GetStackPointer(frame); \ + frame->stacktop = -1; \ if (err) { \ goto error; \ } \