variant record selector cannot be passed by reference

Hi

I am using gpc version 20050331, based on gcc-3.4.3 on solaris 10 intel platform.

I have a record like below

datobj_pointer = ^datobj_record;

datobj_record = RECORD next : datobj_pointer; name : PASNameString; fct : Byte_integer; phystype: phystype_list; fix_ptr : datobj_pointer; nextfct : datobj_pointer; CASE subtype : all_obj_list OF Mea : (cur_mea : meaobj_pointer; com_mea : meaobj_pointer); Ind : (cur_ind : indobj_pointer; com_ind : indobj_pointer); Tim : (cur_tim : timobj_pointer; com_tim : timobj_pointer); Scr : (cur_scr : scrobj_pointer); Evt : (cur_evt : evtobj_pointer); Cmd : (cur_cmd : cmdobj_pointer); Con : (cur_con : conobj_pointer); Tbl : (cur_tbl : tblobj_pointer); Txf : (cur_txf : txfobj_pointer); Com : (cur_com : comobj_pointer; com_com : comobj_pointer); Par : (cur_par : param_pointer; com_par : param_pointer); Slv : (cur_slv : slave_pointer ); END;

datobj : datobj_pointer;

When I call the function like below

r_w_phystype (iofil,i_o,buffer,20,datobj^.phystype,field);

I am getting below error

"variant record selector cannot be passed by reference".

Our software is working on below platforms and compilers

platform compiler sun sun pascal compiler vms vms pascal compiler digital unix digital unix pascal compiler windows borland delphi 7

In the above platforms we are not getting any problems,so please suggest whether I have any workaround?

Regards Prasad