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/* Demangler fuzzer.
Copyright (C) 2014-2021 Free Software Foundation, Inc.
This file is part of GNU libiberty.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include "demangle.h"
#define MAXLEN 253
#define ALPMIN 33
#define ALPMAX 127
static char *program_name;
#define DEFAULT_MAXCOUNT 7500000
static void
print_usage (FILE *fp, int exit_value)
{
fprintf (fp, "Usage: %s [OPTION]...\n", program_name);
fprintf (fp, "Options:\n");
fprintf (fp, " -h Display this message.\n");
fprintf (fp, " -s SEED Select the random seed to be used.\n");
fprintf (fp, " The default is to base one on the");
fprintf (fp, " current time.\n");
fprintf (fp, " -m MAXCOUNT Exit after MAXCOUNT symbols.\n");
fprintf (fp, " The default is %d.", DEFAULT_MAXCOUNT);
fprintf (fp, " Set to `-1' for no limit.\n");
exit (exit_value);
}
int
main (int argc, char *argv[])
{
char symbol[2 + MAXLEN + 1] = "_Z";
int seed = -1, seed_set = 0;
int count = 0, maxcount = DEFAULT_MAXCOUNT;
int optchr;
program_name = argv[0];
do
{
optchr = getopt (argc, argv, "hs:m:t:");
switch (optchr)
{
case '?': /* Unrecognized option. */
print_usage (stderr, 1);
break;
case 'h':
print_usage (stdout, 0);
break;
case 's':
seed = atoi (optarg);
seed_set = 1;
break;
case 'm':
maxcount = atoi (optarg);
break;
}
}
while (optchr != -1);
if (!seed_set)
seed = time (NULL);
srand (seed);
printf ("%s: seed = %d\n", program_name, seed);
while (maxcount < 0 || count < maxcount)
{
char *buffer = symbol + 2;
int length, i;
length = rand () % MAXLEN;
for (i = 0; i < length; i++)
*buffer++ = (rand () % (ALPMAX - ALPMIN)) + ALPMIN;
*buffer++ = '\0';
cplus_demangle (symbol, DMGL_AUTO | DMGL_ANSI | DMGL_PARAMS);
count++;
}
printf ("%s: successfully demangled %d symbols\n", program_name, count);
exit (0);
}
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