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[Adam Conrad <adconrad@xxxxxxx>]

Regression test for bug #1480592 passed.

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https://bugs.launchpad.net/bugs/1480592

Title:
  SEGV in rare cases as a regression from the #1479207 fix

Status in apt package in Ubuntu:
  Invalid
Status in apt source package in Trusty:
  Fix Released

Bug description:
  [ SRU Justification ]
  This is a regression caused by the previous SRU where, under some corner cases, apt will segfault.  See test case.

  https://errors.ubuntu.com/problem/bb16d60f92f153eff1dcb768223d7969783ab053

  [ (Convoluted) Test Case ]
  In a clean trusty chroot:
  # apt-get update && apt-get dist-upgrade
  # apt-get install xserver-xorg-lts-utopic libegl1-mesa-drivers-lts-utopic xserver-xorg-video-all-lts-utopic xserver-xorg-input-all-lts-utopic software-properties-common
  # apt-add-repository ppa:gregory-hainaut/pcsx2.official.ppa
  # dpkg --add-architecture i386
  # apt-get update
  # apt-get install pcsx2
  (segfault)
  # for i in apt apt-utils libapt-pkg4.12 libapt-inst1.5; do echo "$i"_1.0.1ubuntu2.10_amd64.deb | xargs dpkg -i; done
  # apt-get install pcsx2
  0 upgraded, 170 newly installed, 0 to remove and 0 not upgraded.

  [ Additional Test Case ]
  In addition to verifying the segfault has been fixed, the regression tests for bug #1479207 and bug #1429041 should be run again to make sure we've made forward progress.

  [ Regression Potential ]
  Fairly low but, hey, that's what we say every time we touch this line of code, and we've done it 4 times now.

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