clear_opt_exact_info 4254 regcomp.c          clear_opt_exact_info(to);
clear_opt_exact_info 4259 regcomp.c          clear_opt_exact_info(to);
clear_opt_exact_info 4452 regcomp.c        clear_opt_exact_info(&opt->exb);
clear_opt_exact_info 4453 regcomp.c        clear_opt_exact_info(&opt->exm);
clear_opt_exact_info 4454 regcomp.c        clear_opt_exact_info(&opt->expr);
clear_opt_exact_info 4493 regcomp.c            clear_opt_exact_info(&add->exb);
clear_opt_exact_info 4497 regcomp.c            clear_opt_exact_info(&add->exb);