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[Roy <1770617@xxxxxxxxxxxxxxxxxx>]

Backtrace for same problem in GIMP.

** Also affects: gimp (Ubuntu)
   Importance: Undecided
       Status: New

** Attachment added: "GIMP backtrace"
   https://bugs.launchpad.net/ubuntu/+source/dia/+bug/1770617/+attachment/5137753/+files/GIMP%20backtrace.txt

** Summary changed:

- Dia-normal crashes when attempting to print using network printer
+ Dia-normal, GIMP crash when attempting to print using network printer

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https://bugs.launchpad.net/bugs/1770617

Title:
  Dia-normal, GIMP crash when attempting to print using network printer

Status in dia package in Ubuntu:
  New
Status in gimp package in Ubuntu:
  New

Bug description:
  When I attempt to print a diagram from dia-normal using one of the
  network printers offered by cups, the program crashes in the process
  of selecting a printer from the list of available printers.

  Steps to reproduce:
  1) Start dia, open a diagram
  2) Select File->Print
  3) Click on a (network) printer in the list of printers
  -> Crash

  Expected result:
  The ability to click the print button and have my diagram roll off the printer.

  Actual result:
  Dia graphical interface disappears, the following assertion shows up in a terminal:
  *** Error in `dia-normal': double free or corruption (!prev): 0x000000000285db10 ***

  Additional information:
  - Disabling the avahi daemon makes this problem disappear without loss of network printing ability, presumably because our network configuration does not rely on printer auto-discovery.
  - Problems do not occur when printing from e.g. evince.
  - But similar problems do exist with the Gimp. Perhaps this is a bug in one of the libraries used by dia and Gimp (GTK2 print dialogue/back-end problems solved in GTK3?)
  - This bug may be related to bug #1701128, but without access to the logs I am unable to verify.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: dia 0.97.3-1
  ProcVersionSignature: Ubuntu 4.4.0-124.148-generic 4.4.117
  Uname: Linux 4.4.0-124-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.17
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Fri May 11 11:09:10 2018
  InstallationDate: Installed on 2016-05-04 (736 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: dia
  UpgradeStatus: No upgrade log present (probably fresh install)

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