foo.pas(4,7) Error: Identifier not found "a"
foo.pas(4,9) Error: Identifier not found "b"
foo.pas(4,19) Error: Identifier not found "a"
foo.pas(4,21) Error: Identifier not found "b"
foo.pas(5) Fatal: There were 4 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)