mirror of git://sourceware.org/git/glibc.git
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/* Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <error.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <stdio.h>
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/* Number of samples per size. */
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#define N 50000
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static void
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fixed_test (int size)
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{
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char *ptrs[N];
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int i;
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for (i = 0; i < N; ++i)
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{
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int j;
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ptrs[i] = (char *) calloc (1, size);
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if (ptrs[i] == NULL)
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break;
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for (j = 0; j < size; ++j)
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{
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if (ptrs[i][j] != '\0')
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error (EXIT_FAILURE, 0,
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"byte not cleared (size %d, element %d, byte %d)",
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size, i, j);
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ptrs[i][j] = '\xff';
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}
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}
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while (i-- > 0)
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free (ptrs[i]);
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}
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static void
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random_test (void)
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{
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char *ptrs[N];
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int i;
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for (i = 0; i < N; ++i)
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{
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int j;
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int n = 1 + random () % 10;
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int elem = 1 + random () % 100;
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int size = n * elem;
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ptrs[i] = (char *) calloc (n, elem);
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if (ptrs[i] == NULL)
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break;
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for (j = 0; j < size; ++j)
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{
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if (ptrs[i][j] != '\0')
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error (EXIT_FAILURE, 0,
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"byte not cleared (size %d, element %d, byte %d)",
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size, i, j);
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ptrs[i][j] = '\xff';
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}
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}
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while (i-- > 0)
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free (ptrs[i]);
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}
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int
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main (void)
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{
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/* We are allocating blocks with `calloc' and check whether every
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block is completely cleared. We first try this for some fixed
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times and then with random size. */
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fixed_test (15);
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fixed_test (5);
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fixed_test (17);
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fixed_test (6);
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fixed_test (31);
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fixed_test (96);
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random_test ();
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return 0;
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}
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