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glibc/malloc/tst-posix_memalign.c
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/* Test for posix_memalign. | |
Copyright (C) 2013-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <errno.h> | |
#include <stdlib.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <unistd.h> | |
static int errors = 0; | |
static void | |
merror (const char *msg) | |
{ | |
++errors; | |
printf ("Error: %s\n", msg); | |
} | |
static int | |
do_test (void) | |
{ | |
void *p; | |
int ret; | |
unsigned long pagesize = getpagesize (); | |
unsigned long ptrval; | |
p = NULL; | |
/* An attempt to allocate a huge value should return ENOMEM and | |
p should remain NULL. */ | |
ret = posix_memalign (&p, sizeof (void *), -1); | |
if (ret != ENOMEM) | |
merror ("posix_memalign (&p, sizeof (void *), -1) succeeded."); | |
if (ret == ENOMEM && p != NULL) | |
merror ("returned an error but pointer was modified"); | |
free (p); | |
p = NULL; | |
/* Test to expose integer overflow in malloc internals from BZ #15857. */ | |
ret = posix_memalign (&p, pagesize, -pagesize); | |
if (ret != ENOMEM) | |
merror ("posix_memalign (&p, pagesize, -pagesize) succeeded."); | |
free (p); | |
p = NULL; | |
/* Test to expose integer overflow in malloc internals from BZ #16038. */ | |
ret = posix_memalign (&p, -1, pagesize); | |
if (ret != EINVAL) | |
merror ("posix_memalign (&p, -1, pagesize) succeeded."); | |
free (p); | |
p = NULL; | |
/* A zero-sized allocation should succeed with glibc, returning zero | |
and setting p to a non-NULL value. */ | |
ret = posix_memalign (&p, sizeof (void *), 0); | |
if (ret != 0 || p == NULL) | |
merror ("posix_memalign (&p, sizeof (void *), 0) failed."); | |
free (p); | |
ret = posix_memalign (&p, 0x300, 10); | |
if (ret != EINVAL) | |
merror ("posix_memalign (&p, 0x300, 10) succeeded."); | |
ret = posix_memalign (&p, 0, 10); | |
if (ret != EINVAL) | |
merror ("posix_memalign (&p, 0, 10) succeeded."); | |
p = NULL; | |
ret = posix_memalign (&p, 0x100, 10); | |
if (ret != 0) | |
merror ("posix_memalign (&p, 0x100, 10) failed."); | |
if (ret == 0 && p == NULL) | |
merror ("returned success but pointer is NULL"); | |
ptrval = (unsigned long) p; | |
if (ret == 0 && (ptrval & 0xff) != 0) | |
merror ("pointer is not aligned to 0x100"); | |
free (p); | |
return errors != 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |