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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* 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 https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#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());
}
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