Changes (by Roland Haas):

status:

wontfix (was open)

CCTK_InterpGridArrays takes as input a list of indices of Cactus variables to interpolate. If one of these indices is -1, no error is given, and meaningless data is returned for this variable (probably from another gridfunction). This can happen easily if you get the variable index using CCTK_VarIndex and make a spelling mistake in the variable name, and don't check the return value.

Keyword:

Comment (by Roland Haas):

The observed behaviour is the documented and intended behaviour. This has been a feature request for 7 years and no one spoke up for it. Closing as wontfix.

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/1455/cctk_interpgridarrays-should-give-an-error