SvNVX(&PL_sv_yes) = 1;
ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
+ SvANY(&PL_sv_placeholder) = NULL;
+ SvREFCNT(&PL_sv_placeholder)= (~(U32)0)/2;
+ SvFLAGS(&PL_sv_placeholder) = SVf_READONLY|SVt_NULL;
+ ptr_table_store(PL_ptr_table, &proto_perl->Isv_placeholder, &PL_sv_placeholder);
+
/* create (a non-shared!) shared string table */
PL_strtab = newHV();
HvSHAREKEYS_off(PL_strtab);