field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index);
assert(field->declaration->id == CTF_TYPE_ARRAY);
defarray = container_of(field, struct definition_array, p);
field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index);
assert(field->declaration->id == CTF_TYPE_ARRAY);
defarray = container_of(field, struct definition_array, p);