/*

 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * See the COPYRIGHT file distributed with this work for additional

 * information regarding copyright ownership.

 */

#include <config.h>

#include <stdio.h>

#include <string.h>

#include <isc/backtrace.h>

#include <isc/print.h>

#include <isc/result.h>

const char *expected_symbols[] = {

	"func3",

	"func2",

	"func1",

	"main"

};

static int

func3() {

	void *tracebuf[16];

	int i, nframes;

	int error = 0;

	const char *fname;

	isc_result_t result;

	unsigned long offset;

	result = isc_backtrace_gettrace(tracebuf, 16, &nframes);

	if (result != ISC_R_SUCCESS) {

		printf("isc_backtrace_gettrace failed: %s\n",

		       isc_result_totext(result));

		return (1);

	}

	if (nframes < 4)

		error++;

	for (i = 0; i < 4 && i < nframes; i++) {

		fname = NULL;

		result = isc_backtrace_getsymbol(tracebuf[i], &fname, &offset);

		if (result != ISC_R_SUCCESS) {

			error++;

			continue;

		}

		if (strcmp(fname, expected_symbols[i]) != 0)

			error++;

	}

	if (error) {

		printf("Unexpected result:\n");

		printf("  # of frames: %d (expected: at least 4)\n", nframes);

		printf("  symbols:\n");

		for (i = 0; i < nframes; i++) {

			fname = NULL;

			result = isc_backtrace_getsymbol(tracebuf[i], &fname,

							 &offset);

			if (result == ISC_R_SUCCESS)

				printf("  [%d] %s\n", i, fname);

			else {

				printf("  [%d] %p getsymbol failed: %s\n", i,

				       tracebuf[i], isc_result_totext(result));

			}

		}

	}

	return (error);

}

static int

func2() {

	return (func3());

}

static int

func1() {

	return (func2());

}

int

main() {

	return (func1());

}