[Bug 1537528] Re: byobu-config segfault with screen backend

[ Christian Ehrhardt ]

Xenial as-is - still crashing.

Updated to Proposed

# apt install libslang2
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
  libfreetype6
Use 'apt autoremove' to remove it.
The following packages will be upgraded:
  libslang2
1 upgraded, 0 newly installed, 0 to remove and 21 not upgraded.
Need to get 415 kB of archives.
After this operation, 18.4 kB disk space will be freed.
Get:1 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 libslang2 amd64 2.3.0-2ubuntu1.1 [415 kB]
Fetched 415 kB in 0s (2007 kB/s) 
(Reading database ... 25655 files and directories currently installed.)
Preparing to unpack .../libslang2_2.3.0-2ubuntu1.1_amd64.deb ...
Unpacking libslang2:amd64 (2.3.0-2ubuntu1.1) over (2.3.0-2ubuntu1) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Setting up libslang2:amd64 (2.3.0-2ubuntu1.1) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...


Working without a crash now.
Setting verified.

** Tags removed: verification-needed verification-needed-xenial
** Tags added: verification-done verification-done-xenial

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https://bugs.launchpad.net/bugs/1537528

Title:
  byobu-config segfault with screen backend

Status in byobu package in Ubuntu:
  Invalid
Status in newt package in Ubuntu:
  Invalid
Status in slang2 package in Ubuntu:
  Fix Released
Status in slang2 source package in Xenial:
  Fix Committed
Status in byobu package in Debian:
  New

Bug description:
  [Impact]

   * Backport Debian fix for a crash in byobu due to libslang2

  [Test Case]

   * byobu-screen
   * in there hit F9 or start byobu-config
   * without the fix this crashes

  [Regression Potential]

   * This is changing a libs implementation and
      $ reverse-depends src:slang2 -r xenial
     is quite a long list. OTOH this is somewhat ok as the change is in 
     Debian and Ubuntu for more than three releases now and nothing around 
     it seems to have totally broken.
     Never the less the biggest risk I see is something unexpected in one of 
     the other libslang2 users.
     

  [Other Info]
   
   * n/a

  ---

  When running byobu with the screen backend byobu-config segfaults when
  trying to open it by pressing F9.

  Steps to reproduce.

  1. Configure byobu to use screen for the backend
  2. Press F9 to open the configuration menu
  3. The console flashes then returns to your shell window.

  Running byobu-config manually within a byobu screen session shows it's
  segfaulting. It does not crash running it outside of screen.

  byobu:
    Installed: 5.101-0ubuntu1~wily
    Candidate: 5.101-0ubuntu1~wily
    Version table:
   *** 5.101-0ubuntu1~wily 0
          500 http://ppa.launchpad.net/byobu/ppa/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status
       5.97-0ubuntu1 0
          500 http://mirror.us.leaseweb.net/ubuntu/ wily/main amd64 Packages

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