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Add some comments and call free on all potentially allocated pointers. Also remove duplicate check for NULL pointer. ChangeLog: 2013-10-04 Will Newton <will.newton@linaro.org> * malloc/tst-valloc.c: Add comments. (do_test): Add comments and call free on all potentially allocated pointers. Remove duplicate check for NULL pointer. Add space after cast.
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/* Test for valloc.
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Copyright (C) 2013 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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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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static int errors = 0;
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static void
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merror (const char *msg)
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{
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++errors;
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printf ("Error: %s\n", msg);
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}
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static int
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do_test (void)
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{
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void *p;
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unsigned long pagesize = getpagesize ();
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unsigned long ptrval;
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int save;
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errno = 0;
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/* An attempt to allocate a huge value should return NULL and set
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errno to ENOMEM. */
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p = valloc (-1);
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save = errno;
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if (p != NULL)
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merror ("valloc (-1) succeeded.");
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if (p == NULL && save != ENOMEM)
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merror ("valloc (-1) errno is not set correctly");
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free (p);
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errno = 0;
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/* Test to expose integer overflow in malloc internals from BZ #15856. */
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p = valloc (-pagesize);
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save = errno;
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if (p != NULL)
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merror ("valloc (-pagesize) succeeded.");
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if (p == NULL && save != ENOMEM)
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merror ("valloc (-pagesize) errno is not set correctly");
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free (p);
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/* A zero-sized allocation should succeed with glibc, returning a
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non-NULL value. */
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p = valloc (0);
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if (p == NULL)
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merror ("valloc (0) failed.");
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free (p);
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/* Check the alignment of the returned pointer is correct. */
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p = valloc (32);
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if (p == NULL)
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merror ("valloc (32) failed.");
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ptrval = (unsigned long) p;
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if ((ptrval & (pagesize - 1)) != 0)
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merror ("returned pointer is not page aligned.");
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free (p);
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return errors != 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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