2023-01-06 21:08:04 +00:00
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/* Copyright (C) 2013-2023 Free Software Foundation, Inc.
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2013-08-07 18:56:21 +00:00
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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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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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2013-08-07 18:56:21 +00:00
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#include <errno.h>
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#include <malloc.h>
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2022-11-28 17:26:46 +00:00
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#include <stdint.h>
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2013-08-07 18:56:21 +00:00
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#include <stdio.h>
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#include <string.h>
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Split DIAG_* macros to new header libc-diag.h.
Quite a few tests include libc-internal.h just for the DIAG_* macros.
Split those macros to their own file, which can be included safely in
_ISOMAC mode. I also moved ignore_value, since it seems logically
related, even though I didn't notice any tests needing it.
Also add -Wnonnull suppressions to two tests that _should_ have them,
but the error is masked when compiling against internal headers.
* include/libc-diag.h: New file. Define ignore_value,
DIAG_PUSH_NEEDS_COMMENT, DIAG_POP_NEEDS_COMMENT,
DIAG_IGNORE_NEEDS_COMMENT, and DIAG_IGNORE_Os_NEEDS_COMMENT here.
* include/libc-internal.h: Definitions of above macros moved from
here. Include libc-diag.h. Add copyright notice.
* malloc/tst-malloc.c, malloc/tst-memcheck.c, malloc/tst-realloc.c
* misc/tst-error1.c, posix/tst-dir.c, stdio-common/bug21.c
* stdio-common/scanf14.c, stdio-common/scanf4.c, stdio-common/scanf7.c
* stdio-common/test-vfprintf.c, stdio-common/tst-printf.c
* stdio-common/tst-printfsz.c, stdio-common/tst-sprintf.c
* stdio-common/tst-unlockedio.c, stdio-common/tstdiomisc.c
* stdlib/bug-getcontext.c, string/tester.c, string/tst-endian.c
* time/tst-strptime2.c, wcsmbs/tst-wcstof.c:
Include libc-diag.h instead of libc-internal.h.
* stdlib/tst-environ.c: Include libc-diag.h. Suppress -Wnonnull for
call to unsetenv (NULL).
* nptl/tst-mutex1.c: Include libc-diag.h. Suppress -Wnonnull for
call to pthread_mutexattr_destroy (NULL).
2016-11-21 01:46:30 +00:00
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#include <libc-diag.h>
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2022-03-10 07:50:51 +00:00
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#include <support/check.h>
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2013-08-07 18:56:21 +00:00
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static int
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do_test (void)
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{
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void *p;
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unsigned char *c;
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int save, i, ok;
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errno = 0;
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/* realloc (NULL, ...) behaves similarly to malloc (C89). */
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2017-01-04 23:32:14 +00:00
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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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2013-08-07 18:56:21 +00:00
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p = realloc (NULL, -1);
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2017-01-04 23:32:14 +00:00
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DIAG_POP_NEEDS_COMMENT;
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2013-08-07 18:56:21 +00:00
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save = errno;
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if (p != NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (NULL, -1) succeeded.");
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2013-08-07 18:56:21 +00:00
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/* errno should be set to ENOMEM on failure (POSIX). */
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if (p == NULL && save != ENOMEM)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("errno is not set correctly");
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2013-08-07 18:56:21 +00:00
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errno = 0;
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/* realloc (NULL, ...) behaves similarly to malloc (C89). */
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p = realloc (NULL, 10);
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save = errno;
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if (p == NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (NULL, 10) failed.");
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2013-08-07 18:56:21 +00:00
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free (p);
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p = calloc (20, 1);
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if (p == NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("calloc (20, 1) failed.");
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2013-08-07 18:56:21 +00:00
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/* Check increasing size preserves contents (C89). */
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p = realloc (p, 200);
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if (p == NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (p, 200) failed.");
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2013-08-07 18:56:21 +00:00
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c = p;
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ok = 1;
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for (i = 0; i < 20; i++)
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{
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if (c[i] != 0)
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2014-01-02 08:38:18 +00:00
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ok = 0;
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2013-08-07 18:56:21 +00:00
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}
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if (ok == 0)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("first 20 bytes were not cleared");
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2013-08-07 18:56:21 +00:00
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free (p);
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p = realloc (NULL, 100);
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if (p == NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (NULL, 100) failed.");
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2013-08-07 18:56:21 +00:00
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memset (p, 0xff, 100);
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/* Check decreasing size preserves contents (C89). */
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p = realloc (p, 16);
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if (p == NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (p, 16) failed.");
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2013-08-07 18:56:21 +00:00
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c = p;
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ok = 1;
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for (i = 0; i < 16; i++)
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{
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if (c[i] != 0xff)
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2014-01-02 08:38:18 +00:00
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ok = 0;
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2013-08-07 18:56:21 +00:00
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}
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if (ok == 0)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("first 16 bytes were not correct");
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2013-08-07 18:56:21 +00:00
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/* Check failed realloc leaves original untouched (C89). */
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2017-01-04 23:32:14 +00:00
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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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2013-08-07 18:56:21 +00:00
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c = realloc (p, -1);
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2017-01-04 23:32:14 +00:00
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DIAG_POP_NEEDS_COMMENT;
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2013-08-07 18:56:21 +00:00
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if (c != NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (p, -1) succeeded.");
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2013-08-07 18:56:21 +00:00
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c = p;
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ok = 1;
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for (i = 0; i < 16; i++)
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{
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if (c[i] != 0xff)
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2014-01-02 08:38:18 +00:00
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ok = 0;
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2013-08-07 18:56:21 +00:00
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}
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if (ok == 0)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("first 16 bytes were not correct after failed realloc");
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2013-08-07 18:56:21 +00:00
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/* realloc (p, 0) frees p (C89) and returns NULL (glibc). */
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p = realloc (p, 0);
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if (p != NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (p, 0) returned non-NULL.");
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2013-08-07 18:56:21 +00:00
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/* realloc (NULL, 0) acts like malloc (0) (glibc). */
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p = realloc (NULL, 0);
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if (p == NULL)
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2022-03-10 07:50:51 +00:00
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FAIL_EXIT1 ("realloc (NULL, 0) returned NULL.");
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2013-08-07 18:56:21 +00:00
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free (p);
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2022-11-28 17:26:46 +00:00
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/* Smoke test to make sure that allocations do not move if they have enough
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space to expand in the chunk. */
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for (size_t sz = 3; sz < 256 * 1024; sz += 2048)
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{
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p = realloc (NULL, sz);
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if (p == NULL)
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FAIL_EXIT1 ("realloc (NULL, %zu) returned NULL.", sz);
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size_t newsz = malloc_usable_size (p);
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printf ("size: %zu, usable size: %zu, extra: %zu\n",
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sz, newsz, newsz - sz);
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uintptr_t oldp = (uintptr_t) p;
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void *new_p = realloc (p, newsz);
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if ((uintptr_t) new_p != oldp)
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FAIL_EXIT1 ("Expanding (%zu bytes) to usable size (%zu) moved block",
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sz, newsz);
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free (new_p);
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/* We encountered a large enough extra size at least once. */
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if (newsz - sz > 1024)
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break;
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}
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2022-03-10 07:50:51 +00:00
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return 0;
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2013-08-07 18:56:21 +00:00
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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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