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[Apport retracing service <1487375@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1196251 ***
    https://bugs.launchpad.net/bugs/1196251

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #1196251, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** Attachment removed: "CoreDump.gz"
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** Attachment removed: "Disassembly.txt"
   https://bugs.launchpad.net/bugs/1487375/+attachment/4450132/+files/Disassembly.txt

** Attachment removed: "ProcMaps.txt"
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** Attachment removed: "ProcStatus.txt"
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** Attachment removed: "Registers.txt"
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** Attachment removed: "Stacktrace.txt"
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** Attachment removed: "ThreadStacktrace.txt"
   https://bugs.launchpad.net/bugs/1487375/+attachment/4450137/+files/ThreadStacktrace.txt

** This bug has been marked a duplicate of bug 1196251
   pacman crashed with SIGSEGV in is_bonus_dot()

** Information type changed from Private to Public

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/1487375

Title:
  pacman crashed with SIGSEGV in __libc_start_main()

Status in xscreensaver package in Ubuntu:
  New

Bug description:
  pacman screensaver does not work

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: xscreensaver-data-extra 5.15-3ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-61.100-generic 3.13.11-ckt22
  Uname: Linux 3.13.0-61-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: MATE
  Date: Thu Aug 20 20:00:12 2015
  EcryptfsInUse: Yes
  ExecutablePath: /usr/lib/xscreensaver/pacman
  InstallationDate: Installed on 2014-09-04 (350 days ago)
  InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
  ProcCmdline: pacman -root
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x4084bf:	cmp    0xdb8(%rdi),%esi
   PC (0x004084bf) ok
   source "0xdb8(%rdi)" (0x017c6008) not located in a known VMA region (needed readable region)!
   destination "%esi" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: xscreensaver
  StacktraceTop:
   ?? ()
   ?? ()
   ?? ()
   ?? ()
   __libc_start_main (main=0x4027f0, argc=2, argv=0x7ffe5f88d8f8, init=<optimised out>, fini=<optimised out>, rtld_fini=<optimised out>, stack_end=0x7ffe5f88d8e8) at libc-start.c:287
  Title: pacman crashed with SIGSEGV in __libc_start_main()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo wireshark
  XsessionErrors:
   (process:6665): Indicator-Power-WARNING **: Fail to query backlight devices.
   (zeitgeist-datahub:6669): GLib-GObject-WARNING **: invalid (NULL) pointer instance
   (zeitgeist-datahub:6669): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
   (polkit-mate-authentication-agent-1:6871): GLib-WARNING **: GChildWatchSource: Exit status of a child process was requested but ECHILD was received by waitpid(). Most likely the process is ignoring SIGCHLD, or some other thread is invoking waitpid() with a nonpositive first argument; either behavior can break applications that use g_child_watch_add()/g_spawn_sync() either directly or indirectly.

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