Public bug reported:
I was experimenting with ReplicatorG (Java open source 3D printer
software) and I managed to cause a seg fault. I'm having trouble
narrowing down what the problem is but I think it's related to Java3D.
That's the area I've been playing around in, so it would make sense. The
crash happens on BuildSimulation, around line 230:
transform.lookAt(new Point3d(0, 0, 0), new Point3d(diffX,
diffY, diffZ),
new Vector3d(0, 1, 0));
System.out.println("After: transform: " + transform + ", drop:
" + drop);
transform.mul(drop);
System.out.println("After2: transform: " + transform);
The crash appears to happen when transform.mul(drop) is called, since
the text after that statement is not printed out. If I change the last
parameter in transform.lookAt to new Vector3d(0, 0, 1), the crash
doesn't happen anymore. The crash reliably happens every time I run the
program, although sometimes it hangs instead of crashes.
Sorry that I couldn't separate the problem out further. I can attach a
tarball with ReplicatorG's source and brief instructions to reproduce
the problem, although it is 40mb. Hope this helps.
1) lsb_release -rd is Ubuntu 12.04 LTS
2) apt-cache policy openjdk-6-jdk
openjdk-6-jdk:
Installed: 6b24-1.11.1-4ubuntu2
Candidate: 6b24-1.11.1-4ubuntu2
Version table:
*** 6b24-1.11.1-4ubuntu2 0
500 http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
100 /var/lib/dpkg/status
3) It should continue without crashing, or at least throw an exception
4) It crashed with a seg fault message. The log is attached
** Affects: openjdk-6 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1000946
Title:
SIGSEGV happens when using Transform3D with certain parameters
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