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[Launchpad Bug Tracker <1311128@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gccgo-4.9 - 4.9.1-0ubuntu1

---------------
gccgo-4.9 (4.9.1-0ubuntu1) trusty-proposed; urgency=medium

  * Upload the final GCC 4.9.1 release.
  * Merge changes from gcc-4.9 4.9.0-2ubuntu1, including:
    - Fix PR go/60931, garbage collector issue with non 4kB system page size.
      LP: #1304754.
    - Fix wrong-code issue in the little endian vector API (ppc64el).
      LP: #1311128.
    - Fix ABI incompatibility between POWER and Z HTM builtins and intrinsics.
      LP: #1320292.
    - Fix an ICE with invalid code. PR c++/61046. LP: #1313102.
    - gccgo: Don't overwrite memory if an archive has a bad file name.
  * Include the cc1 binary into the gccgo-4.9 package.
  * Do not build-depend on sdt-systemtap for the trusty upload.
  * Warn about ppc ELFv2 ABI issues, which will change in GCC 4.10.
 -- Matthias Klose <doko@xxxxxxxxxx>   Thu, 17 Jul 2014 15:51:15 +0200

** Changed in: gccgo-4.9 (Ubuntu Trusty)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1311128

Title:
  Please incorporate gcc 4.8 revision 209515

Status in “gcc-4.8” package in Ubuntu:
  Fix Released
Status in “gccgo-4.9” package in Ubuntu:
  Invalid
Status in “gcc-4.8” source package in Trusty:
  Confirmed
Status in “gccgo-4.9” source package in Trusty:
  Fix Released
Status in “gcc-4.8” source package in Utopic:
  Fix Released
Status in “gccgo-4.9” source package in Utopic:
  Invalid

Bug description:
  From another, less public, bug:

  Text by Bill Schmidt:

  A GCC bug was found in the little endian vector API that affects use
  of the vec_mergeh and vec_mergel interfaces when VSX is enabled (this
  is the default for Power8). These interfaces produce the wrong results
  for 4x32 vector types (vector int of either signedness, vector float).
  The upstream patch fixes this issue.

  
  (bug internally reported by Thierry Fauck; fixed upstream by Bill Schmidt.)

  SVN revision in FSF 4.8 branch: 209515
  http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=209515

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