[Bug 1749261] Re: Add amd64/i386 support

[Andy Whitcroft]

Hello Steve, or anyone else affected,

Accepted gcc-4.8 into trusty-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/gcc-4.8/4.8.4-2ubuntu1~14.04.4 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-trusty to verification-done-trusty. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-trusty. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: gcc-4.8 (Ubuntu Trusty)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-trusty

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https://bugs.launchpad.net/bugs/1749261

Title:
  Add amd64/i386 support

Status in gcc-4.8 package in Ubuntu:
  New
Status in gcc-4.8 source package in Trusty:
  Fix Committed

Bug description:
  To mitigate Spectre Variant 2, gcc needs to have retpoline support
  (-mindirect-branch and -mfunction-return arguments on amd64 and i386).

  Packages with this will go into the proposed pockets but need to be
  published in the -security pockets for their respective releases.

  Patches for gcc-4.8 were pulled from H.J. Lu's backport branch to 4.9,
  available at https://github.com/hjl-tools/gcc/tree/hjl/indirect/gcc-
  4_9-branch/master . Upstream GCC does not seem to be applying patches
  to anything older than the gcc-6-branch. H.J. Lu is the author of the
  upstream retpoline commits as well.

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