external/bsd/bind/dist/bin/tests/backtrace_test.c

   1 /*      $NetBSD: backtrace_test.c,v 1.7 2014/12/10 04:37:53 christos Exp $      */
   2
   3 /*
   4  * Copyright (C) 2009, 2013  Internet Systems Consortium, Inc. ("ISC")
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  11  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  12  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  13  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  14  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  15  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  16  * PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 /* Id: backtrace_test.c,v 1.4 2009/09/02 23:48:01 tbox Exp  */
  20
  21 #include <config.h>
  22
  23 #include <stdio.h>
  24 #include <string.h>
  25
  26 #include <isc/backtrace.h>
  27 #include <isc/result.h>
  28
  29 const char *expected_symbols[] = {
  30         "func3",
  31         "func2",
  32         "func1",
  33         "main"
  34 };
  35
  36 static int
  37 func3() {
  38         void *tracebuf[16];
  39         int i, nframes;
  40         int error = 0;
  41         const char *fname;
  42         isc_result_t result;
  43         unsigned long offset;
  44
  45         result = isc_backtrace_gettrace(tracebuf, 16, &nframes);
  46         if (result != ISC_R_SUCCESS) {
  47                 printf("isc_backtrace_gettrace failed: %s\n",
  48                        isc_result_totext(result));
  49                 return (1);
  50         }
  51
  52         if (nframes < 4)
  53                 error++;
  54
  55         for (i = 0; i < 4 && i < nframes; i++) {
  56                 fname = NULL;
  57                 result = isc_backtrace_getsymbol(tracebuf[i], &fname, &offset);
  58                 if (result != ISC_R_SUCCESS) {
  59                         error++;
  60                         continue;
  61                 }
  62                 if (strcmp(fname, expected_symbols[i]) != 0)
  63                         error++;
  64         }
  65
  66         if (error) {
  67                 printf("Unexpected result:\n");
  68                 printf("  # of frames: %d (expected: at least 4)\n", nframes);
  69                 printf("  symbols:\n");
  70                 for (i = 0; i < nframes; i++) {
  71                         fname = NULL;
  72                         result = isc_backtrace_getsymbol(tracebuf[i], &fname,
  73                                                          &offset);
  74                         if (result == ISC_R_SUCCESS)
  75                                 printf("  [%d] %s\n", i, fname);
  76                         else {
  77                                 printf("  [%d] %p getsymbol failed: %s\n", i,
  78                                        tracebuf[i], isc_result_totext(result));
  79                         }
  80                 }
  81         }
  82
  83         return (error);
  84 }
  85
  86 static int
  87 func2() {
  88         return (func3());
  89 }
  90
  91 static int
  92 func1() {
  93         return (func2());
  94 }
  95
  96 int
  97 main() {
  98         return (func1());
  99 }