dup_parser_element
ppe = dup_parser_element(&pelem);
pelem->u.parser_op.operands[0] = dup_parser_element(&pe0);
peop.u.parser_op.operands[0] = dup_parser_element(&pe0);
peop.u.parser_op.operands[1] = dup_parser_element(&pe1);
pelem->u.parser_op.operands[0] = dup_parser_element(&pe0);
pelem->u.parser_op.operands[1] = dup_parser_element(&pe1);
pelem->u.parser_op.operands[2] = dup_parser_element(&pe2);