In Delphi, are parameters evaluated in order when passed into a method?

Question

Is the order in which parameters are calculated before a procedure is called defined in Delphi?

IOW, if I have this ugly code (found something like this in a legacy

Answer 1

The order of parameter evaluation in Delphi is not defined.

As an interesting demonstration of this, the following program has different output depending on whether you target 32 or 64 bit code:

program ParameterEvaluationOrder;

{$APPTYPE CONSOLE}

uses
  SysUtils;

function SideEffect(A: Integer): Integer;
begin
  Writeln(A);
  Result := A;
end;

procedure Test(A, B: Integer);
begin
end;

begin
  Test(SideEffect(1), SideEffect(2));
  Readln;
end.