PyKDL: specifying a root name when intializing a Tree causes segfault about orocos_kinematics_dynamics

[smits]

Can you provide a backtrace?

R.

On Thu, Jan 15, 2015 at 11:51 AM, Jelle Feringa [email protected]
wrote:

from PyKDL import Tree
ohno = Tree(root_name="carrot")# kaboom

Segmentation fault: 11

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https://github.com/orocos/orocos_kinematics_dynamics/issues/42.

Ruben Smits, Roboticist - Founder
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Intermodalics - Kapeldreef 60, 3001 Heverlee - BELGIUM
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[jf---]

Sorry Ruben, since this leads to a segfault I can't really do so...
Or do you mean a GDB trace?

[jf---]

Btw, I noticed that trying to access a non-existing segment, results into segfault.
I guess you'd expect a ValueError to be raised

chain.getSegment( chain.getNrOfSegments() + 1 )
# poooof -> segfault

[smits]

I would indeed need a gdb trace. And there is indeed no index checking in the getSegment function: https://github.com/orocos/orocos_kinematics_dynamics/blob/master/orocos_kdl/src/chain.cpp#L68-L71

[zchen24]

@jf--- @smits #145 should fix this.

[MatthijsBurgh]

@jf--- please close this issue, if fixed