3868         if (!PL_regmatch_slab) {  in Perl_regexec_flags()
3869             Newx(PL_regmatch_slab, 1, regmatch_slab);  in Perl_regexec_flags()
3870             PL_regmatch_slab->prev = NULL;  in Perl_regexec_flags()
3871             PL_regmatch_slab->next = NULL;  in Perl_regexec_flags()
3872             PL_regmatch_state = SLAB_FIRST(PL_regmatch_slab);  in Perl_regexec_flags()
3876         old_regmatch_slab  = PL_regmatch_slab;  in Perl_regexec_flags()
3886             if (++PL_regmatch_state >  SLAB_LAST(PL_regmatch_slab))  in Perl_regexec_flags()
4462     regmatch_slab *s = PL_regmatch_slab->next;  in S_push_slab()
4465         s->prev = PL_regmatch_slab;  in S_push_slab()
4467         PL_regmatch_slab->next = s;  in S_push_slab()
4469     PL_regmatch_slab = s;  in S_push_slab()
10027                 regmatch_slab *slab = PL_regmatch_slab;  in S_regmatch()
10050             if (newst >  SLAB_LAST(PL_regmatch_slab))  in S_regmatch()
10081             if (st < SLAB_FIRST(PL_regmatch_slab)) {  in S_regmatch()
10082                 PL_regmatch_slab = PL_regmatch_slab->prev;  in S_regmatch()
10083                 st = SLAB_LAST(PL_regmatch_slab);  in S_regmatch()
10095         while (yes_state < SLAB_FIRST(PL_regmatch_slab)  in S_regmatch()
10096             || yes_state > SLAB_LAST(PL_regmatch_slab))  in S_regmatch()
10099             depth -= (st - SLAB_FIRST(PL_regmatch_slab) + 1);  in S_regmatch()
10100             PL_regmatch_slab = PL_regmatch_slab->prev;  in S_regmatch()
10101             st = SLAB_LAST(PL_regmatch_slab);  in S_regmatch()
10157         if (st < SLAB_FIRST(PL_regmatch_slab)) {  in S_regmatch()
10158             PL_regmatch_slab = PL_regmatch_slab->prev;  in S_regmatch()
10159             st = SLAB_LAST(PL_regmatch_slab);  in S_regmatch()
11332     PL_regmatch_slab  = aux->old_regmatch_slab;  in S_cleanup_regmatch_info_aux()
11338     s = PL_regmatch_slab->next;  in S_cleanup_regmatch_info_aux()
11340         PL_regmatch_slab->next = NULL;  in S_cleanup_regmatch_info_aux()