Free Pascal Compiler version 2.6.2 [2013/02/12] for i386
Copyright (c) 1993-2012 by Florian Klaempfl and others
Target OS: Win32 for i386
Compiling foo.pas
foo.pas(9,9) Warning: Variable "sum" does not seem to be initialized
foo.pas(9,12) Error: Operator is not overloaded: "Array[0..2000000] Of LongInt" + "LongInt"
foo.pas(10,8) Warning: Variable "oo" does not seem to be initialized
foo.pas(19,4) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted
Error: C:\FPC\2.6.2\bin\i386-win32\ppc386.exe returned an error exitcode (normal if you did not specify a source file to be compiled)