Function llg_constraint_init_set_defaults 

#[unsafe(no_mangle)]
pub extern "C" fn llg_constraint_init_set_defaults(
    init: &mut LlgConstraintInit,
    tokenizer: *const LlgTokenizer,
)

Set the default values for the ConstraintInit Disables ff_tokens and backtracking, enables warnings on stderr and all logging to the buffer (get with llg_flush_logs()). You need to set the tokenizer field manually.