#ifndef __A_OUT_GNU_H__# error"Never use <bits/a.out.h> directly; include <a.out.h> instead."#endif#ifndef __A_OUT_GNU_H__# error"Never use <bits/a.out.h> directly; include <a.out.h> instead."#endif#ifndef __A_OUT_GNU_H__# error"Never use <bits/a.out.h> directly; include <a.out.h> instead."#endif