[Bug 2039234] Re: libc6-dev:amd64 overwrites files from libc6:i386 and aborts update when upgrading to mantic

[Simon Chopin]

** Also affects: glibc (Ubuntu Noble)
   Importance: High
       Status: Triaged

** Also affects: ubuntu-release-upgrader (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: glibc (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-release-upgrader (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Changed in: glibc (Ubuntu Noble)
       Status: Triaged => Fix Committed

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https://bugs.launchpad.net/bugs/2039234

Title:
  libc6-dev:amd64 overwrites files from libc6:i386 and aborts update
  when upgrading to mantic

Status in glibc package in Ubuntu:
  Fix Committed
Status in ubuntu-release-upgrader package in Ubuntu:
  New
Status in glibc source package in Mantic:
  New
Status in ubuntu-release-upgrader source package in Mantic:
  New
Status in glibc source package in Noble:
  Fix Committed
Status in ubuntu-release-upgrader source package in Noble:
  New

Bug description:
  This is a bug affecting mantic, apport selected lunar instead of
  mantic because the bug happens in the middle of the upgrade from lunar
  to mantic.

  I tried to update from lunar to mantic, dpkg aborted with this error:

  ```
  Dépaquetage de libc6-dev-i386 (2.38-1ubuntu6) sur (2.37-0ubuntu2.1) ...
  dpkg: erreur de traitement de l'archive /var/cache/apt/archives/libc6-dev-i386_2.38-1ubuntu6_amd64.deb (--unpack) :
   tentative de remplacement de « /usr/include/finclude/math-vector-fortran.h », qui appartient aussi au paquet libc6-dev:amd64 2.37-0ubuntu2.1
  ```

  The message is in French, but the meaning is that dpkg aborts because
  installing libc6-dev:i386 tries to overwrite files from
  libc6-dev:amd64.

  ProblemType: Bug
  DistroRelease: Ubuntu 23.04
  Package: libc6 2.38-1ubuntu6
  ProcVersionSignature: Ubuntu 6.2.0-33.33-generic 6.2.16
  Uname: Linux 6.2.0-33-generic x86_64
  NonfreeKernelModules: amddrm_ttm_helper amdttm amdxcp amddrm_buddy amd_sched amdkcl
  ApportVersion: 2.26.1-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: GNOME
  Date: Fri Oct 13 04:13:11 2023
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: glibc
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.default.apport:
   # set this to 0 to disable apport, or to 1 to enable it
   # you can temporarily override this with
   # sudo service apport start force_start=1
   enabled=0
  mtime.conffile..etc.default.apport: 2018-06-16T17:39:00.798346

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