[ET Trac] [Einstein Toolkit] #1343: Cactus ParameterGetXXX functions return values for non-active thorns

[Einstein Toolkit]

#1343: Cactus ParameterGetXXX functions return values for non-active thorns
----------------------+-----------------------------------------------------
 Reporter:  rhaas     |       Owner:     
     Type:  defect    |      Status:  new
 Priority:  optional  |   Milestone:     
Component:  Cactus    |     Version:     
 Keywords:            |  
----------------------+-----------------------------------------------------
 using eg. CCTK_ParameterValString it is possible to access parameters of
 non-active thorns, eg. the line in CarpetIOHDF5/src/Input.cc lines 280ff
 {{{
   char *buffer = CCTK_ParameterValString ("refinement_levels",
                                           "CarpetRegrid");
   assert (buffer);
   CCTK_VInfo (CCTK_THORNSTRING, "Using %i reflevels from checkpoint file.
 "
               "Ignoring value '%s' in parameter file.",
               num_reflevels, buffer);
   free (buffer);
 }

 char buffer[32];
 snprintf (buffer, sizeof (buffer), "%d", num_reflevels);
 int const retval = CCTK_ParameterSet ("refinement_levels", "CarpetRegrid",
                                       buffer);
 }}}
 will actually get a value (the default value it seems) and is able to
 steer a value of a non-active thorns.

 Reading the Cactus docs this behaviour is not forbidden however I
 personally find it a bit confusing.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/1343>
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