delphi 12 operator "in" error E2010

[isola 1]

function TTVInitialsTest.CalcTestVariable({$IF CompilerVersion < 36} VarIndex : integer {$ELSE} VarIndex : NativeInt {$ENDIF}): double;
begin
  Result:=0;
  if InRange(VarIndex, 1, NTestVariables) then
    if (VarIndex in [1 .. TV.Tracks.Count]) and (TV.SimSprocket[VarIndex]<>nil) then
    begin

..................

..................
    end;
end;

Hello everybody.

This code compiles successfully in delphi 11.

In Delphi 12 I have received an error in the line below  ([dcc64 Error]  E2010 Incompatible types: 'Integer' and 'Int64' )

 if (VarIndex in [1 .. TV.Tracks.Count]) and (TV.SimSprocket[VarIndex]<>nil) then

it's obvious that VarIndex and TV.Tracks.Count have the same type - NativeInt (TV.Tracks  is descendant of TList)

I don't understand. Where did I go wrong? Help, please.

[FPiette 383]

4 hours ago, isola said:

it's obvious that VarIndex and TV.Tracks.Count have the same type - NativeInt (TV.Tracks  is descendant of TList)

Maybe your are wrong. With dcc64 compiler, Integer is 32 bits and NativeInt is 64 bits. Either define varindex as a NativeInt, or use a cast for count (You cannot have more that 2^31 index in that case).

Edited November 29, 2023 by FPiette

[isola 1]

Thank you, FPiette!

The type of error confused me. Here, apparently the point is that the set size (255) is smaller than the type size (Lenght of the TList object).

The code below contains potential error even in 32-bit code despite it can be compiled.

Something like "Range check error" would have been more informative error message.

VarIndex in [1 .. TV.Tracks.Count]

Thanks again.

[David Heffernan 2345]

All kinda moot since you'd never use set membership rather than InRange