(_self_cc), __FILE__, __LINE__, (_msg_fmt), ##__VA_ARGS__)
#define BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_MESSAGE_ITERATOR(_self_iter, _msg_fmt, ...) \
(_self_cc), __FILE__, __LINE__, (_msg_fmt), ##__VA_ARGS__)
#define BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_MESSAGE_ITERATOR(_self_iter, _msg_fmt, ...) \