/* I assume that it only ever "worked" because no-one called
(pseudo)fork while the regexp engine had re-entered itself.
*/
- new_state->re_state_reg_re
- = any_dup(old_state->re_state_reg_re, proto_perl);
new_state->re_state_reg_ganch
= pv_dup(old_state->re_state_reg_ganch);
new_state->re_state_reg_sv