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3a523ccd78
The collate-test.c triggers UB with an signed integer overflow, which results in an error on some architectures (powerpc32). Checked on x86_64, i686, and powerpc.
135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/* Test collation function using real data.
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Copyright (C) 1997-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include <error.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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struct lines
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{
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char *key;
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char *line;
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};
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static int xstrcoll (const void *, const void *);
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static int
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signum (int n)
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{
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return (0 < n) - (n < 0);
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}
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int
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main (int argc, char *argv[])
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{
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int result = 0;
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size_t nstrings, nstrings_max;
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struct lines *strings;
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char *line = NULL;
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size_t len = 0;
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size_t n;
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if (argc < 2)
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error (1, 0, "usage: %s <random seed>", argv[0]);
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setlocale (LC_ALL, "");
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nstrings_max = 100;
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nstrings = 0;
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strings = (struct lines *) malloc (nstrings_max * sizeof (struct lines));
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if (strings == NULL)
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{
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perror (argv[0]);
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exit (1);
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}
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while (1)
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{
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int l;
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if (getline (&line, &len, stdin) < 0)
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break;
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if (nstrings == nstrings_max)
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{
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strings = (struct lines *) realloc (strings,
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(nstrings_max *= 2)
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* sizeof (*strings));
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if (strings == NULL)
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{
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perror (argv[0]);
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exit (1);
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}
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}
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strings[nstrings].line = strdup (line);
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l = strcspn (line, ":(;");
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while (l > 0 && isspace (line[l - 1]))
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--l;
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strings[nstrings].key = strndup (line, l);
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++nstrings;
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}
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free (line);
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/* First shuffle. */
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srandom (atoi (argv[1]));
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for (n = 0; n < 10 * nstrings; ++n)
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{
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int r1, r2;
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size_t idx1 = random () % nstrings;
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size_t idx2 = random () % nstrings;
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struct lines tmp = strings[idx1];
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strings[idx1] = strings[idx2];
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strings[idx2] = tmp;
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/* While we are at it a first little test. */
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r1 = strcoll (strings[idx1].key, strings[idx2].key);
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r2 = strcoll (strings[idx2].key, strings[idx1].key);
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if (signum (r1) != - signum (r2))
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printf ("`%s' and `%s' collate wrong: %d vs. %d\n",
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strings[idx1].key, strings[idx2].key, r1, r2);
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}
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/* Now sort. */
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qsort (strings, nstrings, sizeof (struct lines), xstrcoll);
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/* Print the result. */
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for (n = 0; n < nstrings; ++n)
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{
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fputs (strings[n].line, stdout);
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free (strings[n].line);
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free (strings[n].key);
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}
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free (strings);
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return result;
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}
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static int
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xstrcoll (const void *ptr1, const void *ptr2)
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{
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const struct lines *l1 = (const struct lines *) ptr1;
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const struct lines *l2 = (const struct lines *) ptr2;
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return strcoll (l1->key, l2->key);
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}
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