Your message dated Tue, 14 Sep 2021 22:04:06 +0000
with message-id <e1mqgx8-000inn...@fasolo.debian.org>
and subject line Bug#993973: fixed in glibc 2.32-3
has caused the Debian Bug report #993973,
regarding unistd.h: non-null check not correct for getcwd()
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
993973: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993973
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: libc6-dev
Version: 2.32-2
Current getcwd() is declared as:
/usr/include/unistd.h:
513:/* Get the pathname of the current working directory,
514: and put it in SIZE bytes of BUF. Returns NULL if the
515: directory couldn't be determined or SIZE was too small.
516: If successful, returns BUF. In GNU, if BUF is NULL,
517: an array is allocated with `malloc'; the array is SIZE
518: bytes long, unless SIZE == 0, in which case it is as
519: big as necessary. */
520:extern char *getcwd (char *__buf, size_t __size) __THROW __wur
521: __attr_access ((__write_only__, 1, 2));
Documentation (man page) states:
As an extension to the POSIX.1-2001 standard, glibc's getcwd() allo-
cates the buffer dynamically using malloc(3) if buf is NULL. In this
case, the allocated buffer has the length size unless size is zero,
when buf is allocated as big as necessary. The caller should free(3)
the returned buffer.
The current check doesn't accept the NULL pointer with recent GCC
versions and breaks, for example, building GCC from sources due to
fixincl.c using NULL as the buffer argument so it doesn't need to
allocate on its own:
[all 2021-09-11 18:34:38] make[1]: Entering directory
'/var/lib/laminar/run/gcc-bfin-elf/6/toolchain-build/build-x86_64-pc-linux-gnu/fixincludes'
[all 2021-09-11 18:34:38] /usr/lib/gcc-snapshot/bin/gcc -c -g -O2 -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-Wmissing-format-attribute -Wno-overlength-strings -pedantic -Wno-long-long
-Werror -DHAVE_CONFIG_H -I. -I../../../gcc/fixincludes -I../include
-I../../../gcc/fixincludes/../include ../../../gcc/fixincludes/fixincl.c
[all 2021-09-11 18:34:39] ../../../gcc/fixincludes/fixincl.c: In function
'process':
[all 2021-09-11 18:34:39] ../../../gcc/fixincludes/fixincl.c:1356:7: error:
argument 1 is null but the corresponding size argument 2 value is 4096
[-Werror=nonnull]
[all 2021-09-11 18:34:39] 1356 | fprintf (stderr, "Cannot access %s from
%s\n\terror %d (%s)\n",
[all 2021-09-11 18:34:39] |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[all 2021-09-11 18:34:39] 1357 | pz_curr_file, getcwd ((char *)
NULL, MAXPATHLEN),
[all 2021-09-11 18:34:39] |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[all 2021-09-11 18:34:39] 1358 | erno, xstrerror (erno));
[all 2021-09-11 18:34:39] | ~~~~~~~~~~~~~~~~~~~~~~~
[all 2021-09-11 18:34:39] In file included from
../../../gcc/fixincludes/system.h:192,
[all 2021-09-11 18:34:39] from
../../../gcc/fixincludes/fixlib.h:29,
[all 2021-09-11 18:34:39] from
../../../gcc/fixincludes/fixincl.c:24:
[all 2021-09-11 18:34:39] /usr/include/unistd.h:520:14: note: in a call to
function 'getcwd' declared with attribute 'access (write_only, 1, 2)'
[all 2021-09-11 18:34:39] 520 | extern char *getcwd (char *__buf, size_t
__size) __THROW __wur
[all 2021-09-11 18:34:39] | ^~~~~~
[all 2021-09-11 18:34:39] cc1: all warnings being treated as errors
[all 2021-09-11 18:34:39] make[1]: *** [Makefile:76: fixincl.o] Error 1
[all 2021-09-11 18:34:39] make[1]: Leaving directory
'/var/lib/laminar/run/gcc-bfin-elf/6/toolchain-build/build-x86_64-pc-linux-gnu/fixincludes'
[all 2021-09-11 18:34:39] make: *** [Makefile:2854: all-build-fixincludes]
Error 2
(That's from a not-yet publically announced auto-builder that does
build GCC/Binutils, Linux Kernel, NetBSD and SIMH to check for them
being buildable for a good number of configurations.)
For comparison, with libc6-dev at 2.31-16, declaration was like this:
504:/* Get the pathname of the current working directory,
505: and put it in SIZE bytes of BUF. Returns NULL if the
506: directory couldn't be determined or SIZE was too small.
507: If successful, returns BUF. In GNU, if BUF is NULL,
508: an array is allocated with `malloc'; the array is SIZE
509: bytes long, unless SIZE == 0, in which case it is as
510: big as necessary. */
511:extern char *getcwd (char *__buf, size_t __size) __THROW __wur;
Until glibc's Bugzilla issue is finally resolved
(https://sourceware.org/bugzilla/show_bug.cgi?id=26545), maybe the
Debian package could be changed to drop the access attribute?
Thanks,
Jan-Benedict
--
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--- End Message ---
--- Begin Message ---
Source: glibc
Source-Version: 2.32-3
Done: Aurelien Jarno <aure...@debian.org>
We believe that the bug you reported is fixed in the latest version of
glibc, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 993...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Aurelien Jarno <aure...@debian.org> (supplier of updated glibc package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Tue, 14 Sep 2021 23:47:37 +0200
Source: glibc
Architecture: source
Version: 2.32-3
Distribution: unstable
Urgency: medium
Maintainer: GNU Libc Maintainers <debian-gl...@lists.debian.org>
Changed-By: Aurelien Jarno <aure...@debian.org>
Closes: 993954 993973 994006 994133 994232 994233
Changes:
glibc (2.32-3) unstable; urgency=medium
.
[ John David Anglin ]
* debian/testsuite-xfail-debian.mk: whitelist test-xfail-tst-cond24 on
hppa. Closes: #993954.
.
[ Aurelien Jarno ]
* debian/patches/git-updates.diff: update from upstream stable branch.
* debian/debhelper.in/libc.preinst: drop fragile check for working debconf
frontend now that it is done directly in debconf (see bug#985572) and now
that this version is available in Bullseye.
* debian/control.in/libc: add a Breaks against aide (<< 0.17.3-4+b3). See
bug#994091.
* debian/debhelper.in/libc.preinst: force systemd-logind to do NSS lookups
to workaround the impossibility of restarting systemd-logind. Closes:
#994006.
* debian/control.in/libc: add a Breaks against python3-iptables (<<
1.0.0-2). Closes: #994233.
* debian/patches/all/submitted-po-fr-fixes.diff: fix French translation of
short options. Closes: #994133.
* debian/control.in/libc: add a Breaks against fakechroot (<< 2.19-3.5).
See bug#993946.
* debian/control.in/libc: add a Breaks against dazzdb
(<< 1.0+git20201103.8d98c37-1.1). See bug#993770.
* debian/patches/git-updates.diff: update from upstream stable branch.
* debian/patches/any/submitted-getcwd-gnu-extension-warning.diff: fix
a warning when using the GNU extension of getcwd(). This is a TEMPORARY
fix until upstream takes a decision on the removal of this extension. This
might be REMOVED at a later point, in that case packages should be fixed
instead, like other distributions have already done. Closes: #993973.
.
[ Simon McVittie ]
* debian/libc6-i386.symbols.x32, debian/libc6.symbols.mips,
debian/libc6.symbols.mipsel: fix too aggressive cleanup, leading
unnecessarily tight dependencies on libc6. Closes: #994232.
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