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e6e2424390
GCC mainline has recently added warn_unused_result attributes to some malloc-like built-in functions, where glibc previously had them in its headers only for __USE_FORTIFY_LEVEL > 0. This results in those attributes being newly in effect for building the glibc testsuite, so resulting in new warnings that break the build where tests deliberately call such functions and ignore the result. Thus patch duly adds calls to DIAG_* macros around those calls to disable the warning. Tested with build-many-glibcs.py for aarch64-linux-gnu. * malloc/tst-calloc.c: Include <libc-diag.h>. (null_test): Ignore -Wunused-result around calls to calloc. * malloc/tst-mallocfork.c: Include <libc-diag.h>. (do_test): Ignore -Wunused-result around call to malloc.
134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>.
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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 <error.h>
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#include <limits.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <libc-diag.h>
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/* Number of samples per size. */
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#define N 50000
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static void
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fixed_test (int size)
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{
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char *ptrs[N];
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int i;
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for (i = 0; i < N; ++i)
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{
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int j;
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ptrs[i] = (char *) calloc (1, size);
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if (ptrs[i] == NULL)
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break;
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for (j = 0; j < size; ++j)
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{
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if (ptrs[i][j] != '\0')
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error (EXIT_FAILURE, 0,
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"byte not cleared (size %d, element %d, byte %d)",
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size, i, j);
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ptrs[i][j] = '\xff';
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}
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}
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while (i-- > 0)
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free (ptrs[i]);
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}
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static void
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random_test (void)
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{
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char *ptrs[N];
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int i;
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for (i = 0; i < N; ++i)
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{
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int j;
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int n = 1 + random () % 10;
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int elem = 1 + random () % 100;
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int size = n * elem;
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ptrs[i] = (char *) calloc (n, elem);
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if (ptrs[i] == NULL)
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break;
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for (j = 0; j < size; ++j)
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{
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if (ptrs[i][j] != '\0')
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error (EXIT_FAILURE, 0,
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"byte not cleared (size %d, element %d, byte %d)",
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size, i, j);
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ptrs[i][j] = '\xff';
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}
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}
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while (i-- > 0)
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free (ptrs[i]);
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}
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static void
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null_test (void)
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{
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/* If the size is 0 the result is implementation defined. Just make
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sure the program doesn't crash. The result of calloc is
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deliberately ignored, so do not warn about that. */
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (10, "-Wunused-result");
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calloc (0, 0);
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calloc (0, UINT_MAX);
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calloc (UINT_MAX, 0);
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calloc (0, ~((size_t) 0));
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calloc (~((size_t) 0), 0);
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DIAG_POP_NEEDS_COMMENT;
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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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/* We are allocating blocks with `calloc' and check whether every
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block is completely cleared. We first try this for some fixed
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times and then with random size. */
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fixed_test (15);
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fixed_test (5);
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fixed_test (17);
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fixed_test (6);
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fixed_test (31);
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fixed_test (96);
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random_test ();
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null_test ();
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return 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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