/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* * pANS stdio -- perror */#include "iolib.h"void perror(const char *s){	extern int errno;	if(s!=NULL && *s != '\0') fputs(s, stderr), fputs(": ", stderr);	fputs(strerror(errno), stderr);	putc('\n', stderr);	fflush(stderr);}