xref: /titanic_41/usr/src/lib/libbc/libc/gen/sys5/assert.c (revision 5d54f3d8999eac1762fe0a8c7177d20f1f201fae)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984 AT&T */
/*        All Rights Reserved   */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*LINTLIBRARY*/
/*
 *	called from "assert" macro; prints without printf or stdio.
 */

#include <malloc.h>

#define WRITE(s, n)	(void) write(2, (s), (n))
#define WRITESTR(s1, n, s2)	WRITE((s1), n), \
				WRITE((s2), (unsigned) strlen(s2))

#define	LINESTR ", line NNNNN\n"

void
_assert(char *assertion, char *filename, int line_num)
{
	static char *linestr;
	char *p;
	int div, digit;

	if (!linestr) {
		linestr = malloc(strlen(LINESTR)+1);
		strcpy(linestr, LINESTR);
	}
	p = &linestr[7];

	WRITESTR("Assertion failed: ", 18, assertion);
	WRITESTR(", file ", 7, filename);
	for (div = 10000; div != 0; line_num %= div, div /= 10)
		if ((digit = line_num/div) != 0 || p != &linestr[7] || div == 1)
			*p++ = digit + '0';
	*p++ = '\n';
	*p = '\0';
	WRITE(linestr, (unsigned) strlen(linestr));
	(void) abort();
}