Problem 413

Summary: Crash due to problem in G4Polycone
Product: Geant4 Reporter: Pedro.Arce
Component: geometryAssignee: Gabriele Cosmo <Gabriele.Cosmo>
Status: RESOLVED WORKSFORME    
Severity: normal    
Priority: P2    
Version: 4.1   
Hardware: PC   
OS: Linux   

Description Pedro.Arce 2002-09-23 10:09:20 CEST 
The DistanceToOut method of a G4Polycone returns a too big distance and then it
crashes in G4VoxelNavigation::ComputeStep.
You can find the description of the volume giving the problem at
http://cmsdoc.cern.ch/~arce/oscar/g4-bad_polycone/geometry.lis

I have added a printout in each DistanceXXX method of G4VCSGFaceted. You can see
the output at
http://cmsdoc.cern.ch/~arce/oscar/g4-bad_polycone/g4.out
Comment 1 davidw 2002-10-08 21:34:59 CEST 
The very helpful diagnostic output included in this problem report
indicates that G4Polycone::DistanceToOut was invoked illegally with
a position that is outside its boundaries. It is not clear why this
happened, but it does not appear that a previous call to G4Polycone
was the reason.
Comment 2 Gabriele Cosmo 2003-03-10 02:55:59 CET 
We could not reproduce the problem with the tests we have currently available
and further investigations we could do. It would be extremely useful if you
could provide us with a test case with a geometrical shape similar to the one
used in your setup, so we can reproduce it. Thanks.