Bug#675449: apt removes essential packages without question if they are not native

[Goswin von Brederlow <goswin-v-b@web.de>]

Package: apt
Version: 0.9.5.1
Severity: important

While trying to crossgrade a chroot I noticed that essential packages
that are not of the native architecture can be removed without
question. The usual "Yes, do what I want!" prompt does not appear.

For example dash+bash can be removed leaving the system without shell.

MfG
	Goswin

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=de_DE (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash

Versions of packages apt depends on:
ii  debian-archive-keyring  2010.08.28
ii  gnupg                   1.4.12-4
ii  libapt-pkg4.12          0.9.3+nmu0mrvn1
ii  libc6                   2.13-32
ii  libgcc1                 1:4.6.2-5
ii  libstdc++6              4.6.2-5

apt recommends no packages.

Versions of packages apt suggests:
ii  apt-doc     0.8.15.10
ii  aptitude    0.6.7-1
ii  dpkg-dev    1.16.1.2
ii  python-apt  <none>
ii  xz-utils    5.1.1alpha+20110809-3

-- no debconf information