Raising an error in _sion_paropen_generic_one_file lets buddy checkpointing hang
Raising an error, e.g. line 159 in src/parlib/sion_generic_internal.c@2030 causes tests for buddy checkpointing to hang.
Raising an error, e.g. line 159 in src/parlib/sion_generic_internal.c@2030 causes tests for buddy checkpointing to hang.