+ {
+ if (trouble || cloned) {
+ /* Uh-oh, we have trouble! At least one of the state subs here
+ has its CvOUTSIDE pointer pointing somewhere unexpected. It
+ could be pointing to another state protosub that we are
+ about to clone. So we have to track which sub clones come
+ from which protosubs. If the CvOUTSIDE pointer for a parti-
+ cular sub points to something we have not cloned yet, we
+ delay cloning it. We must loop through the pad entries,
+ until we get a full pass with no cloning. If any uncloned
+ subs remain (probably nested inside anonymous or ‘my’ subs),
+ then they get cloned in a final pass.
+ */
+ bool cloned_in_this_pass;
+ if (!cloned)
+ cloned = (HV *)sv_2mortal((SV *)newHV());
+ do {
+ cloned_in_this_pass = FALSE;
+ for (ix = fpad; ix > 0; ix--) {
+ PADNAME * const name =
+ (ix <= fname) ? pname[ix] : NULL;
+ if (name && name != &PL_padname_undef
+ && !PadnameOUTER(name) && PadnamePV(name)[0] == '&'
+ && PadnameIsSTATE(name) && !CvCLONED(PL_curpad[ix]))
+ {
+ CV * const protokey = CvOUTSIDE(ppad[ix]);
+ CV ** const cvp = protokey == proto
+ ? &cv
+ : (CV **)hv_fetch(cloned, (char *)&protokey,
+ sizeof(CV *), 0);
+ if (cvp && *cvp) {
+ S_cv_clone(aTHX_ (CV *)ppad[ix],
+ (CV *)PL_curpad[ix],
+ *cvp, cloned);
+ (void)hv_store(cloned, (char *)&ppad[ix],
+ sizeof(CV *),
+ SvREFCNT_inc_simple_NN(PL_curpad[ix]),
+ 0);
+ subclones--;
+ cloned_in_this_pass = TRUE;
+ }
+ }
+ }
+ } while (cloned_in_this_pass);
+ if (subclones)
+ for (ix = fpad; ix > 0; ix--) {
+ PADNAME * const name =
+ (ix <= fname) ? pname[ix] : NULL;
+ if (name && name != &PL_padname_undef
+ && !PadnameOUTER(name) && PadnamePV(name)[0] == '&'
+ && PadnameIsSTATE(name) && !CvCLONED(PL_curpad[ix]))
+ S_cv_clone(aTHX_ (CV *)ppad[ix],
+ (CV *)PL_curpad[ix],
+ CvOUTSIDE(ppad[ix]), cloned);
+ }
+ }
+ else for (ix = fpad; ix > 0; ix--) {