[Bug 1534779] Re: Trusty has higher release than Vivid - breaks upgrading

[Matthias Klose]

Upgrades from trusty to vivid are not supported; only from trusty to
utopic, and utopic to vivid.  But utopic is end-of-life, and vivid will
be so in two weeks (Feb 04 2016).  Won't fix for the distro. You can
find updated gcc-4.9 packages in

https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/ppa


** Changed in: gccgo-4.9 (Ubuntu)
       Status: New => Invalid

** Also affects: gcc-4.9 (Ubuntu Vivid)
   Importance: Undecided
       Status: New

** Also affects: gccgo-4.9 (Ubuntu Vivid)
   Importance: Undecided
       Status: New

** No longer affects: gcc-4.9 (Ubuntu)

** No longer affects: gccgo-4.9 (Ubuntu)

** Changed in: gccgo-4.9 (Ubuntu Vivid)
       Status: New => Invalid

** Changed in: gcc-4.9 (Ubuntu Vivid)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1534779

Title:
  Trusty has higher release than Vivid - breaks upgrading

Status in gcc-4.9 source package in Vivid:
  Won't Fix
Status in gccgo-4.9 source package in Vivid:
  Invalid

Bug description:
  Dear all,

  With the upgrade to GCC 4.9 packages that occurred recently on Trusty
  (upgrading to 4.9.3-0ubuntu4), Vivid now provides an older GCC 4.9
  release (4.9.2-10ubuntu13) [1].

  The side effect of that thing is that it's not possible to upgrade from Trusty to Vivid any longer, due to the needed 'downgrade' of GCC. Aptitude will output unmet dependencies such as:
   libasan1 : Depends: gcc-4.9-base (= 4.9.2-10ubuntu13) but 4.9.3-0ubuntu4 is installed.
   libquadmath0 : Depends: gcc-4.9-base (= 4.9.2-10ubuntu13) but 4.9.3-0ubuntu4 is installed.

  [1]:
  http://packages.ubuntu.com/search?keywords=gcc-4.9-base&searchon=names&suite=all&section=all

  Cheers,

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