[Bug 1585702] Re: not possible to retrace ppc64el crashes

[Martin Pitt]

Brian, thanks for testing those. Back when I wrote this I had the
impression that gdb sometimes got confused and needed those additional
"set architecture" commands. But if current versions (≥ trusty) don't
need it, so much the better!

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Title:
  not possible to retrace ppc64el crashes

Status in Apport:
  Fix Released
Status in apport package in Ubuntu:
  Fix Committed

Bug description:
  I was trying to retrace a ppc64el crash I found and ran into the
  following issue:

  Calling gdb command: gdb-multiarch --ex 'set architecture powerpc:common' --ex 'set gnutarget elf32-powerpc' --ex 'set debug-file-directory /tmp/apport_sandbox_Y6fXCx/usr/lib/debug' --ex 'set solib-absolute-prefix /tmp/apport_sandbox_Y6fXCx' --ex 'file "/tmp/apport_sandbox_Y6fXCx//usr/bin/xfce4-panel"' --ex 'core-file /tmp/apport_core_N0Vrmm'
  GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
  Copyright (C) 2014 Free Software Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
  This is free software: you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
  and "show warranty" for details.
  This GDB was configured as "x86_64-linux-gnu".
  Type "show configuration" for configuration details.
  For bug reporting instructions, please see:
  <http://www.gnu.org/software/gdb/bugs/>.
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  <http://www.gnu.org/software/gdb/documentation/>.
  For help, type "help".
  Type "apropos word" to search for commands related to "word".
  The target architecture is assumed to be powerpc:common
  Architecture of file not recognized.
  [New LWP 44625]
  warning: Selected architecture powerpc:common is not compatible with reported target architecture powerpc:common64
  /build/buildd/gdb-7.7.1/gdb/gdbarch.c:3217: internal-error: gdbarch_elf_make_msymbol_special: Assertion `gdbarch != NULL' failed.
  A problem internal to GDB has been detected,
  further debugging may prove unreliable.

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