Function PyFrame_GetBack

qrenderdoc/3rdparty/pythoncapi_compat.h:168–172

// bpo-40421 added PyFrame_GetBack() to Python 3.9.0b1
#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
static inline PyFrameObject* PyFrame_GetBack(PyFrameObject *frame)
{
    assert(frame != _Py_NULL);
    return _Py_CAST(PyFrameObject*, Py_XNewRef(frame->f_back));
}
#endif

#if !defined(PYPY_VERSION)