diff options
Diffstat (limited to 'malloc/tst-mallocalign1.c')
-rw-r--r-- | malloc/tst-mallocalign1.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/malloc/tst-mallocalign1.c b/malloc/tst-mallocalign1.c new file mode 100644 index 0000000000..294e821afe --- /dev/null +++ b/malloc/tst-mallocalign1.c @@ -0,0 +1,71 @@ +/* Verify that MALLOC_ALIGNMENT is honored by malloc. + Copyright (C) 2012-2021 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 <stdio.h> +#include <stdlib.h> +#include <inttypes.h> +#include <malloc-size.h> + +static void * +test (size_t s) +{ + void *p = malloc (s); + + printf ("malloc: %zu, %p: %zu\n", s, p, + ((uintptr_t) p) & MALLOC_ALIGN_MASK); + return p; +} + +static int +do_test (void) +{ + void *p; + int ret = 0; + + p = test (2); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + p = test (8); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + p = test (13); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + p = test (16); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + p = test (23); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + p = test (43); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + p = test (123); + ret |= (uintptr_t) p & MALLOC_ALIGN_MASK; + free (p); + + return ret; +} + +#include <support/test-driver.c> |