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[Launchpad Bug Tracker <1509081@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package nano - 2.4.2-1ubuntu1

---------------
nano (2.4.2-1ubuntu1) xenial; urgency=medium

  [ Benno Schulenberg ]
  * d/p/trim-long-hostname.patch:
    - Cherry pick upstream fix for a hostname that is longer than expected,
      fixing crash (LP: #1509081).  Can be dropped with 2.4.3.

 -- Michael Terry <mterry@xxxxxxxxxx>  Mon, 07 Dec 2015 16:28:36 -0500

** Changed in: nano (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1509081

Title:
  nano segfaults as root after upgrade to 15.10

Status in nano package in Ubuntu:
  Fix Released
Status in nano source package in Wily:
  New

Bug description:
  Description:	Ubuntu 15.10
  Release:	15.10

  nano:
    Installed: 2.4.2-1
    Candidate: 2.4.2-1
    Version table:
   *** 2.4.2-1 0
          500 http://mirror.bytemark.co.uk/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

  
  After upgrading Ubuntu 15.04 to 15.10, when I run nano as root on a file it just segfaults. I'm not having this problem on other 15.04->15.10 upgrades

  strace is https://p.defau.lt/?q7xGwt3HoqB74xTawUUHDA
  catchsegv is https://p.defau.lt/?0SPQY_bDj6F6j1ZKeToQoA

  
  Under gdb with nano-dbgsym installed, it gives

  #0  main (argc=2, argv=0x7fffffffe688) at ../../src/nano.c:2768

  
  If I run it as sudo nano filename.txt, it gives an error as below rather than segfaulting

  [ Couldn't determine hostname for lock file: File name too long ]


  Both my user and root have the same locale settings. I've tried
  regenerating the locales

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