Object array access in external unit causes compile error

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Create a TdwsUnit and attach it to the compiler.  Declare a class "TMyObject"
2. Declare an array "MyObjects", whose base type is TMyObject
3. Try to compile a script containing the line "myObjects[0] := nil;"

This will raise an invalid typecast error in TdwsCompiler.ReadSymbol, at the 
line:

dataExpr:=(Result as TDataExpr);

Result, at this point, is an object of class TTypeReferenceExpr, which is 
almost certainly incorrect.

Original issue reported on code.google.com by masonwhe...@gmail.com on 21 Jun 2013 at 10:17

[GoogleCodeExporter]

I've added a ArrayOfObjects test with those steps, but it doesn't reproduce the 
issue... could you tweak the test so it will fail and trigger the issue?

Original comment by zar...@gmail.com on 25 Jun 2013 at 6:28

• Changed state: NeedMoreInfo

[GoogleCodeExporter]

The error can be triggered by removing the variable "a" in the test script, and 
trying to treat the declared array type symbol from the unit as if it were a 
variable:

TDynObjects[0] := nil;

Original comment by masonwhe...@gmail.com on 25 Jun 2013 at 1:53