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/* Copyright (C) 2005-2025 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <libc-diag.h>
#include "tst-malloc-aux.h"
static int errors = 0;
static void
merror (const char *msg)
{
++errors;
printf ("Error: %s\n", msg);
}
static int
do_test (void)
{
void *p, *q;
errno = 0;
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
/* GCC 7 warns about too-large allocations; here we want to test
that they fail. */
DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
#endif
p = malloc (-1);
DIAG_POP_NEEDS_COMMENT;
if (p != NULL)
merror ("malloc (-1) succeeded.");
else if (errno != ENOMEM)
merror ("errno is not set correctly.");
p = malloc (10);
if (p == NULL)
merror ("malloc (10) failed.");
p = realloc (p, 0);
if (p != NULL)
merror ("realloc (p, 0) failed.");
p = malloc (0);
if (p == NULL)
merror ("malloc (0) failed.");
p = realloc (p, 0);
if (p != NULL)
merror ("realloc (p, 0) failed.");
q = malloc (256);
if (q == NULL)
merror ("malloc (256) failed.");
p = malloc (512);
if (p == NULL)
merror ("malloc (512) failed.");
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
/* GCC 7 warns about too-large allocations; here we want to test
that they fail. */
DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
#endif
if (realloc (p, -256) != NULL)
merror ("realloc (p, -256) succeeded.");
else if (errno != ENOMEM)
merror ("errno is not set correctly.");
DIAG_POP_NEEDS_COMMENT;
#if __GNUC_PREREQ (12, 0)
/* Ignore a valid warning about using a pointer made indeterminate
by a prior call to realloc(). */
DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
#endif
free (p);
#if __GNUC_PREREQ (12, 0)
DIAG_POP_NEEDS_COMMENT;
#endif
p = malloc (512);
if (p == NULL)
merror ("malloc (512) failed.");
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
/* GCC 7 warns about too-large allocations; here we want to test
that they fail. */
DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
#endif
if (realloc (p, -1) != NULL)
merror ("realloc (p, -1) succeeded.");
else if (errno != ENOMEM)
merror ("errno is not set correctly.");
DIAG_POP_NEEDS_COMMENT;
#if __GNUC_PREREQ (12, 0)
/* Ignore a valid warning about using a pointer made indeterminate
by a prior call to realloc(). */
DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
#endif
free (p);
#if __GNUC_PREREQ (12, 0)
DIAG_POP_NEEDS_COMMENT;
#endif
free (q);
return errors != 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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