1 /* Demangler fuzzer. 2 3 Copyright (C) 2014 Free Software Foundation, Inc. 4 5 This file is part of GNU libiberty. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <unistd.h> 23 #include <time.h> 24 #include "demangle.h" 25 26 #define MAXLEN 253 27 #define ALPMIN 33 28 #define ALPMAX 127 29 30 static char *program_name; 31 32 #define DEFAULT_MAXCOUNT 7500000 33 34 static void 35 print_usage (FILE *fp, int exit_value) 36 { 37 fprintf (fp, "Usage: %s [OPTION]...\n", program_name); 38 fprintf (fp, "Options:\n"); 39 fprintf (fp, " -h Display this message.\n"); 40 fprintf (fp, " -s SEED Select the random seed to be used.\n"); 41 fprintf (fp, " The default is to base one on the"); 42 fprintf (fp, " current time.\n"); 43 fprintf (fp, " -m MAXCOUNT Exit after MAXCOUNT symbols.\n"); 44 fprintf (fp, " The default is %d.", DEFAULT_MAXCOUNT); 45 fprintf (fp, " Set to `-1' for no limit.\n"); 46 47 exit (exit_value); 48 } 49 50 int 51 main (int argc, char *argv[]) 52 { 53 char symbol[2 + MAXLEN + 1] = "_Z"; 54 int seed = -1, seed_set = 0; 55 int count = 0, maxcount = DEFAULT_MAXCOUNT; 56 int optchr; 57 58 program_name = argv[0]; 59 60 do 61 { 62 optchr = getopt (argc, argv, "hs:m:t:"); 63 switch (optchr) 64 { 65 case '?': /* Unrecognized option. */ 66 print_usage (stderr, 1); 67 break; 68 69 case 'h': 70 print_usage (stdout, 0); 71 break; 72 73 case 's': 74 seed = atoi (optarg); 75 seed_set = 1; 76 break; 77 78 case 'm': 79 maxcount = atoi (optarg); 80 break; 81 } 82 } 83 while (optchr != -1); 84 85 if (!seed_set) 86 seed = time (NULL); 87 srand (seed); 88 printf ("%s: seed = %d\n", program_name, seed); 89 90 while (maxcount < 0 || count < maxcount) 91 { 92 char *buffer = symbol + 2; 93 int length, i; 94 95 length = rand () % MAXLEN; 96 for (i = 0; i < length; i++) 97 *buffer++ = (rand () % (ALPMAX - ALPMIN)) + ALPMIN; 98 99 *buffer++ = '\0'; 100 101 cplus_demangle (symbol, DMGL_AUTO | DMGL_ANSI | DMGL_PARAMS); 102 103 count++; 104 } 105 106 printf ("%s: successfully demangled %d symbols\n", program_name, count); 107 exit (0); 108 } 109
