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Bug#820826: marked as done (libc6-dev-amd64: Multiarch allows conflicting packages, and apt-get does not detect this)

Your message dated Sun, 14 Jan 2018 11:04:42 +0000
with message-id <E1eag5i-0007Ex-OA@fasolo.debian.org>
and subject line Bug#702962: fixed in glibc 2.26-4
has caused the Debian Bug report #702962,
regarding libc6-dev-amd64: Multiarch allows conflicting packages, and apt-get does not detect this
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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-- 
702962: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702962
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: libc6-dev-amd64
Version: 2.19-18+deb8u4
Severity: normal

Dear Maintainer,

I'm not an expert in the cross-compilation toolchain or its Debian repository configuration, but the libc6-dev-* packages appear to be set up with architecture qualifiers so that only one will ever be installed; since they conflict.
Multiarch support allows multiple of these packages to be attempted to be installed.

1. The wrong package for the architecture is allowed to be installed through multiarch with no complaints (and possibly as a dependency of, eg, a misconfigured other package)
2. If apt-get is requested to install another, conflicting, package in this family, it will attempt to do so until dpkg discovers the conflict and the operation fails with no error message explaining why
1+2. Synergistically, this can allow the wrong package to get onto a system with no complaints, then when the legitimate package is required by something, apt-get cannot install it though it attempts to, giving a dpkg error message that doesn't explain the underlying problem (and apt-get suggests apt-get -f install, which does nothing to fix it of course)

+ Also, the package naming scheme may be confusing to intermediate and novice users if they're expected to find that a package is incorrectly installed and which one, as libc6-dev-amd64 is *not* to be installed on amd64 systems, and similarly for libc6-dev-i386 and i386 systems; their qualifiers are setup to only be allowed on the opposite architecture (unless multiarch is enabled, which entirely leads to this situation)

+ I presume this would apply to other architectures as well, and possibly other packages (esp. cross-compilation related ones?), but these were the packages I personally encountered in this event.




-- System Information:
Debian Release: 8.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

--- End Message ---
--- Begin Message --- 
Source: glibc
Source-Version: 2.26-4

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 702962@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Aurelien Jarno <aurel32@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 ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Format: 1.8
Date: Sun, 14 Jan 2018 11:24:48 +0100
Source: glibc
Binary: libc-bin libc-dev-bin libc-l10n glibc-doc glibc-source locales locales-all nscd multiarch-support libc6 libc6-dev libc6-dbg libc6-pic libc6-udeb libc6.1 libc6.1-dev libc6.1-dbg libc6.1-pic libc6.1-udeb libc0.3 libc0.3-dev libc0.3-dbg libc0.3-pic libc0.3-udeb libc0.1 libc0.1-dev libc0.1-dbg libc0.1-pic libc0.1-udeb libc6-i386 libc6-dev-i386 libc6-sparc libc6-dev-sparc libc6-sparc64 libc6-dev-sparc64 libc6-s390 libc6-dev-s390 libc6-amd64 libc6-dev-amd64 libc6-powerpc libc6-dev-powerpc libc6-ppc64 libc6-dev-ppc64 libc6-mips32 libc6-dev-mips32 libc6-mipsn32 libc6-dev-mipsn32 libc6-mips64 libc6-dev-mips64 libc0.1-i386 libc0.1-dev-i386 libc6-x32 libc6-dev-x32 libc6-xen libc0.3-xen libc6.1-alphaev67
Architecture: source
Version: 2.26-4
Distribution: unstable
Urgency: medium
Maintainer: GNU Libc Maintainers <debian-glibc@lists.debian.org>
Changed-By: Aurelien Jarno <aurel32@debian.org>
Description:
 glibc-doc  - GNU C Library: Documentation
 glibc-source - GNU C Library: sources
 libc-bin   - GNU C Library: Binaries
 libc-dev-bin - GNU C Library: Development binaries
 libc-l10n  - GNU C Library: localization files
 libc0.1    - GNU C Library: Shared libraries
 libc0.1-dbg - GNU C Library: detached debugging symbols
 libc0.1-dev - GNU C Library: Development Libraries and Header Files
 libc0.1-dev-i386 - GNU C Library: 32bit development libraries for AMD64
 libc0.1-i386 - GNU C Library: 32bit shared libraries for AMD64
 libc0.1-pic - GNU C Library: PIC archive library
 libc0.1-udeb - GNU C Library: Shared libraries - udeb (udeb)
 libc0.3    - GNU C Library: Shared libraries
 libc0.3-dbg - GNU C Library: detached debugging symbols
 libc0.3-dev - GNU C Library: Development Libraries and Header Files
 libc0.3-pic - GNU C Library: PIC archive library
 libc0.3-udeb - GNU C Library: Shared libraries - udeb (udeb)
 libc0.3-xen - GNU C Library: Shared libraries [Xen version]
 libc6      - GNU C Library: Shared libraries
 libc6-amd64 - GNU C Library: 64bit Shared libraries for AMD64
 libc6-dbg  - GNU C Library: detached debugging symbols
 libc6-dev  - GNU C Library: Development Libraries and Header Files
 libc6-dev-amd64 - GNU C Library: 64bit Development Libraries for AMD64
 libc6-dev-i386 - GNU C Library: 32-bit development libraries for AMD64
 libc6-dev-mips32 - GNU C Library: o32 Development Libraries for MIPS
 libc6-dev-mips64 - GNU C Library: 64bit Development Libraries for MIPS64
 libc6-dev-mipsn32 - GNU C Library: n32 Development Libraries for MIPS64
 libc6-dev-powerpc - GNU C Library: 32bit powerpc development libraries for ppc64
 libc6-dev-ppc64 - GNU C Library: 64bit Development Libraries for PowerPC64
 libc6-dev-s390 - GNU C Library: 32bit Development Libraries for IBM zSeries
 libc6-dev-sparc - GNU C Library: 32bit Development Libraries for SPARC
 libc6-dev-sparc64 - GNU C Library: 64bit Development Libraries for UltraSPARC
 libc6-dev-x32 - GNU C Library: X32 ABI Development Libraries for AMD64
 libc6-i386 - GNU C Library: 32-bit shared libraries for AMD64
 libc6-mips32 - GNU C Library: o32 Shared libraries for MIPS
 libc6-mips64 - GNU C Library: 64bit Shared libraries for MIPS64
 libc6-mipsn32 - GNU C Library: n32 Shared libraries for MIPS64
 libc6-pic  - GNU C Library: PIC archive library
 libc6-powerpc - GNU C Library: 32bit powerpc shared libraries for ppc64
 libc6-ppc64 - GNU C Library: 64bit Shared libraries for PowerPC64
 libc6-s390 - GNU C Library: 32bit Shared libraries for IBM zSeries
 libc6-sparc - GNU C Library: 32bit Shared libraries for SPARC
 libc6-sparc64 - GNU C Library: 64bit Shared libraries for UltraSPARC
 libc6-udeb - GNU C Library: Shared libraries - udeb (udeb)
 libc6-x32  - GNU C Library: X32 ABI Shared libraries for AMD64
 libc6-xen  - GNU C Library: Shared libraries [Xen version]
 libc6.1    - GNU C Library: Shared libraries
 libc6.1-alphaev67 - GNU C Library: Shared libraries (EV67 optimized)
 libc6.1-dbg - GNU C Library: detached debugging symbols
 libc6.1-dev - GNU C Library: Development Libraries and Header Files
 libc6.1-pic - GNU C Library: PIC archive library
 libc6.1-udeb - GNU C Library: Shared libraries - udeb (udeb)
 locales    - GNU C Library: National Language (locale) data [support]
 locales-all - GNU C Library: Precompiled locale data
 multiarch-support - Transitional package to ensure multiarch compatibility
 nscd       - GNU C Library: Name Service Cache Daemon
Closes: 702962 743618 784015 820826 870257 887001
Changes:
 glibc (2.26-4) unstable; urgency=medium
 .
   [ Aurelien Jarno ]
   * debian/testsuite-xfail-debian.mk: since we now also run the testsuite for
     the multilib flavours, simplify the mips* entries into mips*, mips be and
     mips le, instead of trying to keep all the flavours in sync. Remove
     XFAILs for tests that have been fixed.
   * debian/patches/git-updates.diff: update from upstream stable branch:
     - Fix a buffer underflow in getcwd() (CVE-2018-1000001).  Closes:
       #887001.
   * debian/control.in/*: add conflicts to only allow one to install one set
     of multilib packages simultaneously.  Closes: #702962, #743618, #784015,
     #820826, #870257.
Checksums-Sha1:
 7647330ca874c0a570459291369a9156634fd1fc 8799 glibc_2.26-4.dsc
 02738b4437c21ce4afbb842d34286c667896ae0c 1085352 glibc_2.26-4.debian.tar.xz
 008f686d22b687215066cbcfc837c945900e0bc8 7509 glibc_2.26-4_source.buildinfo
Checksums-Sha256:
 4b551de8b7ecc553a6464e022c63b8118d8879a16305ba562dc5153dad2f148c 8799 glibc_2.26-4.dsc
 3e3385262c977489a5bd4f141233afb5d8bd06b9efcf07bb5547b7ffb5350b2d 1085352 glibc_2.26-4.debian.tar.xz
 c186fc40813ac2bab3bcb184d2b6a5f7d82bc0a8fec62ac9393b9b2e4b0a2d07 7509 glibc_2.26-4_source.buildinfo
Files:
 ed248ea28063231f6e91d3e9c11bd8f8 8799 libs required glibc_2.26-4.dsc
 58545c1d54be18720cfce62d0a085571 1085352 libs required glibc_2.26-4.debian.tar.xz
 60cbf146b982b4dbda4a3a1a33019b83 7509 libs required glibc_2.26-4_source.buildinfo

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