ocaml-maint team mailing list archive

[Shane Synan <1543374@xxxxxxxxxxxxxxxxxx>]

There's a bug report for getting Unison 2.48.3-1 into Ubuntu 16.04 and
backporting it to Ubuntu 14.04:
https://bugs.launchpad.net/ubuntu/+source/unison/+bug/1421184

According to the bug report linked by linuxien_ref above, Debian seems
to be taking this approach and hopefully Ubuntu can as well, either
before Import Freeze (Feb. 18th) or as a Stable Release Update.
Otherwise, Unison may need reverted for the current version in Ubuntu
16.04 is mostly unusable.

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https://bugs.launchpad.net/bugs/1543374

Title:
  [regression] Unison segfault when transferring data, "input_value: bad
  bigarray kind"

Status in unison package in Ubuntu:
  Confirmed

Bug description:
  After installing the latest round of updates to Ubuntu 16.04 Xenial,
  Unison segfaults when synchronizing some files across SSH.

  Steps
  1.  Install unison on a local machine running Ubuntu 14.04 LTS and a remote device running Ubuntu 16.04 and unison_2.40.102-2ubuntu2.
  2.  Synchronize certain types of files.  In my case, the Rhythmbox database and 1 GB+ .tar.gz archives both caused issues.

  What happens
  Unison aborts on the server side while the client displays: Uncaught exception Failure("input_value: bad bigarray kind").

  What should happen
  Files are synchronized as usual.

  Reverting to the previous version unison_2.40.102-2ubuntu1 from Wily
  and below works around the issue.  As Unison was rebuilt without
  changes (
  http://changelogs.ubuntu.com/changelogs/pool/universe/u/unison/unison_2.40.102-2ubuntu2/changelog
  ), I don't know if a third-party library may have changed instead.

  I attempted to capture the report using "apport-bug unison"; if I'm
  missing information let me know!  I can almost always reproduce this
  issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: unison 2.40.102-2ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
  Uname: Linux 4.4.0-2-generic x86_64
  ApportVersion: 2.19.4-0ubuntu2
  Architecture: amd64
  Date: Mon Feb  8 17:48:02 2016
  Dependencies:
   gcc-5-base 5.3.1-8ubuntu2
   libc6 2.21-0ubuntu5
   libgcc1 1:5.3.1-8ubuntu2
  InstallationDate: Installed on 2016-01-10 (29 days ago)
  InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151115)
  SourcePackage: unison
  UpgradeStatus: No upgrade log present (probably fresh install)

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