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111
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1 /* Demangler fuzzer.
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2
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145
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3 Copyright (C) 2014-2020 Free Software Foundation, Inc.
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111
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4
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5 This file is part of GNU libiberty.
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6
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7 This program is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 This program is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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19
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20 #include <stdio.h>
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21 #include <stdlib.h>
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22 #include <unistd.h>
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23 #include <time.h>
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24 #include "demangle.h"
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25
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26 #define MAXLEN 253
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27 #define ALPMIN 33
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28 #define ALPMAX 127
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29
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30 static char *program_name;
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31
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32 #define DEFAULT_MAXCOUNT 7500000
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33
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34 static void
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35 print_usage (FILE *fp, int exit_value)
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36 {
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37 fprintf (fp, "Usage: %s [OPTION]...\n", program_name);
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38 fprintf (fp, "Options:\n");
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39 fprintf (fp, " -h Display this message.\n");
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40 fprintf (fp, " -s SEED Select the random seed to be used.\n");
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41 fprintf (fp, " The default is to base one on the");
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42 fprintf (fp, " current time.\n");
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43 fprintf (fp, " -m MAXCOUNT Exit after MAXCOUNT symbols.\n");
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44 fprintf (fp, " The default is %d.", DEFAULT_MAXCOUNT);
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45 fprintf (fp, " Set to `-1' for no limit.\n");
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46
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47 exit (exit_value);
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48 }
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49
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50 int
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51 main (int argc, char *argv[])
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52 {
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53 char symbol[2 + MAXLEN + 1] = "_Z";
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54 int seed = -1, seed_set = 0;
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55 int count = 0, maxcount = DEFAULT_MAXCOUNT;
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56 int optchr;
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57
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58 program_name = argv[0];
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59
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60 do
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61 {
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62 optchr = getopt (argc, argv, "hs:m:t:");
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63 switch (optchr)
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64 {
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65 case '?': /* Unrecognized option. */
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66 print_usage (stderr, 1);
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67 break;
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68
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69 case 'h':
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70 print_usage (stdout, 0);
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71 break;
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72
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73 case 's':
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74 seed = atoi (optarg);
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75 seed_set = 1;
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76 break;
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77
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78 case 'm':
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79 maxcount = atoi (optarg);
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80 break;
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81 }
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82 }
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83 while (optchr != -1);
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84
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85 if (!seed_set)
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86 seed = time (NULL);
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87 srand (seed);
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88 printf ("%s: seed = %d\n", program_name, seed);
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89
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90 while (maxcount < 0 || count < maxcount)
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91 {
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92 char *buffer = symbol + 2;
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93 int length, i;
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94
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95 length = rand () % MAXLEN;
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96 for (i = 0; i < length; i++)
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97 *buffer++ = (rand () % (ALPMAX - ALPMIN)) + ALPMIN;
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98
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99 *buffer++ = '\0';
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100
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101 cplus_demangle (symbol, DMGL_AUTO | DMGL_ANSI | DMGL_PARAMS);
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102
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103 count++;
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104 }
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105
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106 printf ("%s: successfully demangled %d symbols\n", program_name, count);
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107 exit (0);
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108 }
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