Bug#740480: apt: "apt-get update" gives bad error when /tmp/ is full

["Ph. Marek" <philipp.marek@linbit.com>]

Package: apt
Version: 0.9.15.4+b1
Severity: normal

I accidentally filled up my /tmp (which is a separate tmpfs); the next "apt-get
update" said

   E: GPG error: http://ftp.at.debian.org testing InRelease: The following
signatures were invalid: NODATA 2

It should notice ENOSPC and give a helpful message, instead of saying
"signature invalid".



-- Package-specific info:

-- (no /etc/apt/preferences present) --


-- (/etc/apt/sources.list present, but not submitted) --


-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.12-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages apt depends on:
ii  debian-archive-keyring  2012.4
ii  gnupg                   1.4.16-1.1
ii  libapt-pkg4.12          0.9.15.4+b1
ii  libc6                   2.17-97
ii  libgcc1                 1:4.8.2-16
ii  libstdc++6              4.8.2-16

apt recommends no packages.

Versions of packages apt suggests:
pn  apt-doc     <none>
ii  aptitude    0.6.10-1
ii  dpkg-dev    1.17.6
ii  python-apt  0.9.1
ii  xz-utils    5.1.1alpha+20120614-2

-- no debconf information