[fpc-pascal] Array slices

[Christos Chryssochoidis]

Hello all,

A while ago in one of the FPC lists I had read that FPC 2.2.0  
supports array slices. So I made a program to test this feature:

> program Test_Slices;
>
>    procedure Test(C :  array of Integer);
>    begin
>    end;
>
> var
>    A : array of Integer;
>    B : array of Integer;
>
> begin
>    setLength(A,6);
>    Test(A[2..4]); // This works
>    setlength(B,6);
> // B := A[4..6]  // Compilation error if I uncomment this line
> end.

The above code, as it is, compiles without problem. However if I  
uncomment the last line, I get a compilation error:

> ChristosComputer:~/workspace/pascal christoschryssochoidis$ fpc  
> Test_Slices.pas
> Free Pascal Compiler version 2.2.0 [2007/08/30] for i386
> Copyright (c) 1993-2007 by Florian Klaempfl
> Target OS: Darwin for i386
> Compiling Test_Slices.pas
> Fatal: Compilation aborted
> An unhandled exception occurred at $0010401C :
> EAbstractError : Abstract method called
>   $0010401C
>   $0013334D
>   $00133098
>   $00129879
>   $00129879
>   $0012A94C
>   $0010401C
>   $000DCD87
>   $000C13ED
>   $0001B5F5
>
> Error: /usr/bin/ppc386 returned an error exitcode (normal if you  
> did not specify a source file to be compiled)
> ChristosComputer:~/workspace/pascal christoschryssochoidis$


Are array slices only supported as arguments to subprograms calls?
I 'm using FPC 2.2.0 on Mac OS X Intel.

Thanks very much in advance,

C.C.