Bug#915557: libx11-xcb1: changelog.Debian.gz is not deleted when removing packag so next install fails

[Jens Getreu]

Package: libx11-xcb1
Version: 2:1.6.4-3+deb9u1
Severity: important

Dear Maintainer,


* What led up to the situation?

My installation of `wine` failed because, the installation of `libx11-xcb1`
failed.


```
Unpacking libx11-xcb1:i386 (2:1.6.4-3+deb9u1) ...
dpkg: error processing archive /tmp/apt-dpkg-
install-1cFjeB/052-libx11-xcb1_2%3a1.6.4-3+deb9u1_i386.deb (--unpack):
trying to overwrite shared '/usr/share/doc/libx11-xcb1/changelog.Debian.gz',
which is different from other instances of package libx11-xcb1:i386
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Selecting previously unselected package libxi6:i386.
```


* What was the outcome of this action?

My package database became unstable.



* What outcome did you expect instead?

Install without error.



* Workaround?

rm /usr/share/doc/libx11-xcb1/changelog.Debian.gz

before installing helped.

I assume it was not properly removed from the previous install and this
prevented the new install (see error message above).



-- System Information:
Debian Release: 9.6
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-0.bpo.1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libx11-xcb1 depends on:
ii libc6 2.24-11+deb9u3

libx11-xcb1 recommends no packages.

libx11-xcb1 suggests no packages.

[Sven Joachim]

Control: tags -1 + unreproducible

Post by Jens Getreu
Package: libx11-xcb1
Version: 2:1.6.4-3+deb9u1
Severity: important
Dear Maintainer,
* What led up to the situation?
My installation of `wine` failed because, the installation of `libx11-xcb1`
failed.
```
Unpacking libx11-xcb1:i386 (2:1.6.4-3+deb9u1) ...
dpkg: error processing archive /tmp/apt-dpkg-
trying to overwrite shared '/usr/share/doc/libx11-xcb1/changelog.Debian.gz',
which is different from other instances of package libx11-xcb1:i386
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)

I cannot reproduce this. Downloaded both the amd64 and i386 version of
libx11-xcb1 from packages.debian.org, and their
/usr/share/doc/libx11-xcb1/changelog.Debian.gz files are identical:

,----
| $ dpkg-deb -x libx11-xcb1_1.6.4-3+deb9u1_amd64.deb amd64
| $ dpkg-deb -x libx11-xcb1_1.6.4-3+deb9u1_i386.deb i386
| $ diff -sq {amd64,i386}/usr/share/doc/libx11-xcb1/changelog.Debian.gz
| Dateien amd64/usr/share/doc/libx11-xcb1/changelog.Debian.gz und i386/usr/share/doc/libx11-xcb1/changelog.Debian.gz sind identisch.
`----

You can do the same with the files in /var/cache/apt/archives if they
are still there.

I suspect /usr/share/doc/libx11-xcb1/changelog.Debian.gz has been
corrupted on your system, you may want to fsck(8) your filesystem(s) and
run "dpkg --verify" to look for possible more damage.

Post by Jens Getreu
* Workaround?
rm /usr/share/doc/libx11-xcb1/changelog.Debian.gz
before installing helped.

Indeed, but it also makes it impossible to get at the corrupted version
of this file on your system. So I think there is not much we can do.

Cheers,
Sven

[Debian Bug Tracking System]

Post by Sven Joachim
tags -1 + unreproducible

Bug #915557 [libx11-xcb1] libx11-xcb1: changelog.Debian.gz is not deleted when removing packag so next install fails
Added tag(s) unreproducible.