[fpc-pascal] When the variable freed in Optimize compile

[Zaher Dirkey]

Hi, I know when compile the project with optimize in Delphi the variable
freed/allocated after the last line used.
How can i make same in FPC, O3 not worked for me.
I used FPC 2.4.4

var
  c: Currency;
begin
   c := 10;
   writeln(c);
<<now c freed
   some code here
end;

Thanks in advance.
-- 
Zaher Dirkey
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