[Bug 1433541] Re: dot crashes with assertion failed on graph with some combinations of duplicated edges

[Brian Murray]

*** This bug is a duplicate of bug 1433540 ***
    https://bugs.launchpad.net/bugs/1433540

** This bug has been marked a duplicate of bug 1433540
   dot crashes with assertion failed on graph with some combinations of duplicated edges

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to graphviz in Ubuntu.
https://bugs.launchpad.net/bugs/1433541

Title:
  dot crashes with assertion failed on graph with some combinations of
  duplicated edges

Status in graphviz package in Ubuntu:
  New

Bug description:
  When processing some source files with a number of duplicated edges
  (that is, there exist some nodes A and B such that several edges A->B
  are declared with various properties), dot fails to produce an output.
  Usual source files are processed correctly.

  Bug exists upstream with detailed steps to reproduce on
  http://www.graphviz.org/mantisbt/view.php?id=2456 but I could not
  create an account there (or even login anonymously). This bug report
  on LaunchPad may be useful to confirm it affects multiple users.

  I suspect the reason is duplicated edges because the only Google
  answer on the assertion failure message is on that Mantis page, and
  the graphs I was working on do have a number of duplicated edges.

  1) The release of Ubuntu you are using, via 'lsb_release -rd' or
  System -> About Ubuntu

  LC_ALL=C lsb_release -rd

  Description:	Ubuntu 14.04.2 LTS
  Release:	14.04

  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center

  apt-cache policy graphviz

  graphviz:
    Installé : 2.36.0-0ubuntu3.1
    Candidat : 2.36.0-0ubuntu3.1
   Table de version :
   *** 2.36.0-0ubuntu3.1 0
          500 http://fr.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
          100 /var/lib/dpkg/status
       2.36.0-0ubuntu3 0
          500 http://fr.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

  3) What you expected to happen

  A graphic file is generated.

  4) What happened instead

  Graphviz stops with message:

  dot: class2.c:149: merge_chain: Assertion
  `(((Agedgeinfo_t*)(((Agobj_t*)(e))->data))->to_virt) == ((void *)0)'
  failed.

  
  # Additional information

  Also observed with graphviz-2.38 on Ubuntu 14.10.

  Bug exists upstream with detailed steps to reproduce on
  http://www.graphviz.org/mantisbt/view.php?id=2456 but I could not
  create an account there (or even login anonymously). This bug report
  on LaunchPad may be useful to confirm it affects multiple users.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: graphviz 2.36.0-0ubuntu3.1
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  Date: Wed Mar 18 12:01:27 2015
  InstallationDate: Installed on 2014-05-15 (306 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: graphviz
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/graphviz/+bug/1433541/+subscriptions