PERL_CALLCONV OP* Perl_op_append_elem(pTHX_ I32 optype, OP* first, OP* last);
PERL_CALLCONV OP* Perl_op_append_list(pTHX_ I32 optype, OP* first, OP* last);
+PERL_CALLCONV OPclass Perl_op_class(pTHX_ const OP *o);
PERL_CALLCONV void Perl_op_clear(pTHX_ OP* o);
#define PERL_ARGS_ASSERT_OP_CLEAR \
assert(o)