Bug#710266: gcc-4.8: fails to build current git head kernel x86-64 architecture

[Arthur Marsh <arthur.marsh@internode.on.net>]

Package: gcc-4.8
Version: 4.8.0-8
Severity: normal

Dear Maintainer,
*** Please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

After the last gcc-4.8 update, building the 3.10-rc3 and later kernel
for x86-64 (optimised for Opteron/Athlon64 architecture) failed:

/tmp/cc1gDLm4.s: Assembler messages:
/tmp/cc1gDLm4.s:43: Error: expecting string instruction after `rep'
/tmp/cc1gDLm4.s:147: Error: expecting string instruction after `rep'
/tmp/cc1gDLm4.s:149: Error: expecting string instruction after `rep'
/tmp/cc1gDLm4.s:229: Error: expecting string instruction after `rep'
make[3]: *** [arch/x86/boot/compressed/string.o] Error 1
make[3]: *** Waiting for unfinished jobs....
/tmp/ccHGocv5.s: Assembler messages:
/tmp/ccHGocv5.s:1187: Error: expecting string instruction after `rep'

git-bisecting showed that the build failure still occurred for a kernel
version that had previously built on the earlier gcc-4.8 from unstable.

Building using gcc-4.7 and using gcc-4.8 4.8.0-7 worked.

*** End of the template - remove these lines ***


-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.10.0-rc2+ (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages gcc-4.8 depends on:
ii  binutils        2.22-8
ii  cpp-4.8         4.8.0-8
ii  gcc-4.8-base    4.8.0-8
ii  libc6           2.17-3
ii  libcloog-isl4   0.18.0-2
ii  libgcc-4.8-dev  4.8.0-8
ii  libgmp10        2:5.1.2+dfsg-1
ii  libisl10        0.11.2-1
ii  libmpc3         1.0.1-1
ii  libmpfr4        3.1.1-1
ii  zlib1g          1:1.2.8.dfsg-1

Versions of packages gcc-4.8 recommends:
ii  libc6-dev  2.17-3

Versions of packages gcc-4.8 suggests:
pn  binutils-gold        <none>
pn  gcc-4.8-doc          <none>
ii  gcc-4.8-locales      4.8.0-8
ii  gcc-4.8-multilib     4.8.0-8
ii  libasan0-dbg         4.8.0-8
ii  libatomic1-dbg       4.8.0-8
pn  libbacktrace1-dbg    <none>
ii  libgcc1-dbg          1:4.8.0-8
ii  libgomp1-dbg         4.8.0-8
ii  libitm1-dbg          4.8.0-8
pn  libmudflap0-4.8-dev  <none>
ii  libmudflap0-dbg      4.8.0-8
ii  libquadmath0-dbg     4.8.0-8
ii  libtsan0-dbg         4.8.0-8

-- no debconf information