[Bug 975793] [NEW] 'aptitude safe-upgrade -d -y' enters infinite loop

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Marcin Juszkiewicz (hrw):

[Impact]

Users of aptitude can not download updates in advance with the
intention of installing them later.  One common use case is using
apt-cron to download all available updates at night then reviewing
and installing a subset of them later.

The problem does not occur for all users, but can be traced to a
point where the download/install logic invokes dpkg even though it
is supposed to only download packages.

[Test Case]

* Wait for package updates to be available:

  # aptitude clean && aptitude update
  […]
  Current status: 6 updates [+6].

* Fetch the updates using -d (download only) and observe that
  after the download, aptitude loops (appears stuck) without
  ever exiting:

  # aptitude safe-upgrade -d -y
  […]
  Get: 5 http://fr.archive.ubuntu.com/ubuntu precise/main insserv i386 1.14.0-2.1ubuntu2 [50.1 kB]
  Get: 6 http://fr.archive.ubuntu.com/ubuntu precise/main iproute i386 20111117-1ubuntu2 [441 kB]
  Fetched 3574 kB in 0s (9562 kB/s)

[Regression Potential]

Small.

* Small patch touching only one file.

* Some of the updated logic can be checked against similar code
  in apt/cmndline/apt-get.cc(InstallPackages).

* Fixed in Debian sid since May with no regressions reported.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: aptitude 0.6.6-1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic-pae 3.2.14
Uname: Linux 3.2.0-22-generic-pae i686
ApportVersion: 2.0-0ubuntu4
Architecture: i386
Date: Sat Apr  7 10:36:46 2012
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: aptitude
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: aptitude
     Importance: Unknown
         Status: Fix Released

** Affects: aptitude (Ubuntu)
     Importance: Undecided
         Status: Fix Released


** Tags: apport-bug i386 patch precise
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'aptitude safe-upgrade -d -y' enters infinite loop
https://bugs.launchpad.net/bugs/975793
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