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[Launchpad Bug Tracker <1628207@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gcc-6 - 6.2.0-5ubuntu11

---------------
gcc-6 (6.2.0-5ubuntu11) yakkety; urgency=medium

  * Merge with Debian; remaining changes:
    - Build from upstream sources.

gcc-6 (6.2.0-5) unstable; urgency=medium

  * Update to SVN 20160927 (r240553, 6.2.1) from the gcc-6-branch.
    - Fix PR sanitizer/77396, PR libstdc++/77645, PR libstdc++/77645,
      PR target/77326 (AVR), PR target/77349 (PPC), PR middle-end/77594,
      PR sanitizer/68260, PR fortran/77516, PR target/69255 (x86),
      PR c++/77553, PR c++/77539, PR fortran/77500, PR c/77450,
      PR middle-end/77436, PR tree-optimization/77514, PR middle-end/77544,
      PR tree-optimization/77514, PR middle-end/77605, PR middle-end/77679,
      PR tree-optimization/77621, PR target/77621 (x86), PR c++/71979.
  * Fix gij installation on hppa. Closes: #838111.
  * Fix PR rtl-optimization/71709, taken from the trunk. LP: #1628207.
  * Apply workaround for PR libstdc++/77686. Addresses: #838438.

gcc-6 (6.2.0-4) unstable; urgency=medium

  * Update to SVN 20160914 (r240133, 6.2.1) from the gcc-6-branch.
    - Fix PR rtl-optimization/77452, PR c++/77427.
  * gcj: Depend on the ecj1 standalone binary.
  * Configure native builds using --with-program-prefix.
  * Fix ICE in gdc symbol mangling (Iain Buclaw). LP: #1620681.
  * Backport from libffi trunk (Stefan Bühler):
    - Always check for PaX MPROTECT on linux, make EMUTRAMP experimental.
    - dlmmap_locked always needs locking as it always modifies execsize.

 -- Matthias Klose <doko@xxxxxxxxxx>  Wed, 28 Sep 2016 15:58:48 +0200

** Changed in: gcc-6 (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1628207

Title:
  boot arguments passed in CONFIG_CMDLINE not being picked up by kernel
  with gcc-ppc64-linux-gnu v5.4.0 and v6.1.1

Status in gcc:
  Unknown
Status in gcc-5 package in Ubuntu:
  Fix Released
Status in gcc-6 package in Ubuntu:
  Fix Released
Status in gcc-5 source package in Xenial:
  New
Status in gccgo-6 source package in Xenial:
  New

Bug description:
  == Comment: #0 - Akshay Adiga - 2016-09-22 23:55:06 ==
  ---Problem Description---
  boot arguments (passed as CONFIG_CMDLINE)  are not being
  picked up by kernel while using gcc-ppc64-linux-gnu v5.4.0 and v6.1.1.
   (gcc v5.3.1 works fine)
   
   
  ---Steps to Reproduce---
  enable following config options in .config
  CONFIG_CMDLINE_BOOL=y
  CONFIG_CMDLINE="<required boot args for the system>"
  CONFIG_CMDLINE_FORCE=y

  build kernel image and kexec without additional boot args.

  The system does not boot as it does not get the boot args.

  I have debugged to issue to gcc compiler optimization :
  https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-September/149026.html

  The problem has been reported and fixed in upstream gcc
     https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71709

  Need to backport this fix for gcc-ppc64-linux-gnu v5.4.0 onwards.

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