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3d7229c250
GCC 7 has a -Walloc-size-larger-than= warning for allocations of half the address space or more. This causes errors building glibc tests that deliberately test failure of very large allocations. This patch arranges for this warning to be ignored around the problematic function calls. Tested compilation for aarch64 (GCC mainline) with build-many-glibcs.py; did execution testing for x86_64 (GCC 5). * malloc/tst-malloc.c: Include <libc-internal.h>. (do_test): Disable -Walloc-size-larger-than= around tests of malloc with negative sizes. * malloc/tst-mcheck.c: Include <libc-internal.h>. (do_test): Disable -Walloc-size-larger-than= around tests of malloc and realloc with negative sizes. * malloc/tst-realloc.c: Include <libc-internal.h>. (do_test): Disable -Walloc-size-larger-than= around tests of realloc with negative sizes.
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
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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 <stdio.h>
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#include <stdlib.h>
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#include <libc-internal.h>
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static int errors = 0;
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static void
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merror (const char *msg)
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{
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++errors;
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printf ("Error: %s\n", msg);
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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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void *p, *q;
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errno = 0;
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DIAG_PUSH_NEEDS_COMMENT;
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#if __GNUC_PREREQ (7, 0)
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/* GCC 7 warns about too-large allocations; here we want to test
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that they fail. */
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DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
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#endif
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p = malloc (-1);
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DIAG_POP_NEEDS_COMMENT;
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if (p != NULL)
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merror ("malloc (-1) succeeded.");
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else if (errno != ENOMEM)
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merror ("errno is not set correctly.");
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p = malloc (10);
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if (p == NULL)
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merror ("malloc (10) failed.");
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p = realloc (p, 0);
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if (p != NULL)
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merror ("realloc (p, 0) failed.");
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p = malloc (0);
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if (p == NULL)
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merror ("malloc (0) failed.");
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p = realloc (p, 0);
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if (p != NULL)
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merror ("realloc (p, 0) failed.");
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q = malloc (256);
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if (q == NULL)
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merror ("malloc (256) failed.");
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p = malloc (512);
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if (p == NULL)
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merror ("malloc (512) failed.");
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DIAG_PUSH_NEEDS_COMMENT;
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#if __GNUC_PREREQ (7, 0)
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/* GCC 7 warns about too-large allocations; here we want to test
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that they fail. */
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DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
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#endif
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if (realloc (p, -256) != NULL)
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merror ("realloc (p, -256) succeeded.");
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else if (errno != ENOMEM)
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merror ("errno is not set correctly.");
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DIAG_POP_NEEDS_COMMENT;
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free (p);
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p = malloc (512);
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if (p == NULL)
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merror ("malloc (512) failed.");
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DIAG_PUSH_NEEDS_COMMENT;
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#if __GNUC_PREREQ (7, 0)
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/* GCC 7 warns about too-large allocations; here we want to test
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that they fail. */
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DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
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#endif
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if (realloc (p, -1) != NULL)
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merror ("realloc (p, -1) succeeded.");
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else if (errno != ENOMEM)
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merror ("errno is not set correctly.");
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DIAG_POP_NEEDS_COMMENT;
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free (p);
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free (q);
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return errors != 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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