78     _PyErr_StackItem *exc_info = tstate->exc_info;  in _PyErr_GetTopmostException()  local
79     while ((exc_info->exc_type == NULL || exc_info->exc_type == Py_None) &&  in _PyErr_GetTopmostException()
80            exc_info->previous_item != NULL)  in _PyErr_GetTopmostException()
82         exc_info = exc_info->previous_item;  in _PyErr_GetTopmostException()
84     return exc_info;  in _PyErr_GetTopmostException()
441     _PyErr_StackItem *exc_info = _PyErr_GetTopmostException(tstate);  in _PyErr_GetExcInfo()  local
442     *p_type = exc_info->exc_type;  in _PyErr_GetExcInfo()
443     *p_value = exc_info->exc_value;  in _PyErr_GetExcInfo()
444     *p_traceback = exc_info->exc_traceback;  in _PyErr_GetExcInfo()
465     oldtype = tstate->exc_info->exc_type;  in PyErr_SetExcInfo()
466     oldvalue = tstate->exc_info->exc_value;  in PyErr_SetExcInfo()
467     oldtraceback = tstate->exc_info->exc_traceback;  in PyErr_SetExcInfo()
469     tstate->exc_info->exc_type = p_type;  in PyErr_SetExcInfo()
470     tstate->exc_info->exc_value = p_value;  in PyErr_SetExcInfo()
471     tstate->exc_info->exc_traceback = p_traceback;  in PyErr_SetExcInfo()
526 _PyErr_ChainStackItem(_PyErr_StackItem *exc_info)  in _PyErr_ChainStackItem()  argument
532     if (exc_info == NULL) {  in _PyErr_ChainStackItem()
534         exc_info = tstate->exc_info;  in _PyErr_ChainStackItem()
538     if (exc_info->exc_type == NULL || exc_info->exc_type == Py_None) {  in _PyErr_ChainStackItem()
546         saved_exc_info = tstate->exc_info;  in _PyErr_ChainStackItem()
547         tstate->exc_info = exc_info;  in _PyErr_ChainStackItem()
554     exc2 = exc_info->exc_type;  in _PyErr_ChainStackItem()
555     val2 = exc_info->exc_value;  in _PyErr_ChainStackItem()
556     tb2 = exc_info->exc_traceback;  in _PyErr_ChainStackItem()
569         tstate->exc_info = saved_exc_info;  in _PyErr_ChainStackItem()