[ET Trac] [Einstein Toolkit] #410: CarpetIOHDF5 may segfault when one_file_per_group is selected

[Einstein Toolkit]

#410: CarpetIOHDF5 may segfault when one_file_per_group is selected
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 Reporter:  bmundim             |       Owner:  eschnett
     Type:  defect              |      Status:  new     
 Priority:  major               |   Milestone:          
Component:  Carpet              |     Version:          
 Keywords:  Carpet git version  |  
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 I was facing one of those cryptic MPI error messages on Ranger,
 where your job quits without any useful error message. It turns out
 that this parameter file had

  CarpetIOHDF5::one_file_per_group             = "yes"
  CarpetIOHDF5::out2D_vars      = " ADMBase::gxx"

 and CarpetIOHDF5 would try to loop over the group variables when
 just one of them was selected. As a result it has accessed memory
 address that it was not supposed to, consequently killing the job.

 I have attached the stack back trace.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/410>
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