}
OP *
+Perl_ck_unpack(pTHX_ OP *o)
+{
+ OP *kid = cLISTOPo->op_first;
+ if (kid->op_sibling) {
+ kid = kid->op_sibling;
+ if (!kid->op_sibling)
+ kid->op_sibling = newDEFSVOP();
+ }
+ return ck_fun(o);
+}
+
+OP *
Perl_ck_substr(pTHX_ OP *o)
{
o = ck_fun(o);