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/*
* Copyright (c) 1987 University of Maryland Department of Computer Science.
* All rights reserved. Permission to copy for any purpose is hereby granted
* so long as this copyright notice remains intact.
*/
#ifndef lint
static char rcsid[] = "$Header: error.c,v 2.7 87/06/16 18:27:46 chris Exp $";
#endif
/*
* Print an error message with an optional system error number, and
* optionally quit.
*
* THIS CODE IS SYSTEM DEPENDENT UNLESS varargs WORKS WITH vprintf
* OR _doprnt. It should work properly under System V using vprintf.
* (If you have vprintf, define HAVE_VPRINTF.)
*/
#include <stdio.h>
#include <varargs.h>
#ifdef lint
/* VARARGS3 ARGSUSED */
error(quit, e, fmt) int quit, e; char *fmt; {;}
/* VARARGS1 ARGSUSED */
panic(fmt) char *fmt; { exit(1); /* NOTREACHED */ }
#else lint
extern char *ProgName;
extern int errno;
extern char *sys_errlist[];
extern int sys_nerr;
error(va_alist)
va_dcl
{
va_list l;
int quit, e;
char *fmt;
(void) fflush(stdout); /* sync error messages */
(void) fprintf(stderr, "%s: ", ProgName);
va_start(l);
/* pick up the constant arguments: quit, errno, printf format */
quit = va_arg(l, int);
e = va_arg(l, int);
if (e < 0)
e = errno;
fmt = va_arg(l, char *);
#if defined(sys5) || defined(HAVE_VPRINTF)
(void) vfprintf(stderr, fmt, l);
#else
_doprnt(fmt, l, stderr);
#endif
va_end(l);
if (e) {
if (e < sys_nerr)
(void) fprintf(stderr, ": %s", sys_errlist[e]);
else
(void) fprintf(stderr, ": Unknown error code %d", e);
}
(void) putc('\n', stderr);
(void) fflush(stderr); /* just in case */
if (quit)
exit(quit);
}
panic(va_alist)
va_dcl
{
va_list l;
char *fmt;
(void) fflush(stdout);
(void) fprintf(stderr, "%s: panic: ", ProgName);
va_start(l);
/* pick up the constant argument: printf format */
fmt = va_arg(l, char *);
#if defined(sys5) || defined(HAVE_VPRINTF)
(void) vfprintf(stderr, fmt, l);
#else
_doprnt(fmt, l, stderr);
#endif
va_end(l);
(void) putc('\n', stderr);
(void) fflush(stderr);
abort();
}
#endif /* lint */
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