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01bffc013c
Hoist the NULL check for malloc_usable_size into its entry points in
malloc-debug and malloc and assume non-NULL in all callees. This fixes
BZ #28506
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
(cherry picked from commit 88e316b064)
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* Ensure that malloc_usable_size returns the request size with
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MALLOC_CHECK_ exported to a positive value.
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Copyright (C) 2012-2021 Free Software Foundation, Inc.
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Copyright The GNU Toolchain Authors.
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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 <malloc.h>
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#include <string.h>
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#include <stdio.h>
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#include <support/support.h>
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#include <support/check.h>
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static int
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do_test (void)
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{
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size_t usable_size;
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void *p = malloc (7);
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TEST_VERIFY_EXIT (p != NULL);
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usable_size = malloc_usable_size (p);
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TEST_COMPARE (usable_size, 7);
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memset (p, 0, usable_size);
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free (p);
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TEST_COMPARE (malloc_usable_size (NULL), 0);
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return 0;
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}
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#include "support/test-driver.c"
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