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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#include "util.h"

void die(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	fprintf(stderr, "error: ");
	vfprintf(stderr, fmt, ap);
	if (errno)
		fprintf(stderr, " (%d): %s\n", errno, strerror(errno));
	else
		fputc('\n', stderr);;
	va_end(ap);

	exit(errno);
}