[fpc-pascal] The keyboard unit

[Kevin Lyda]

When I compile and run this small test program (
https://gist.github.com/lyda/2d33a6d91067e9dffb4ed37147b52583 ) the
following happens:

% fpc test.pas
Free Pascal Compiler version 3.0.4+dfsg-22~bpo9+2 [2019/02/22] for x86_64
Copyright (c) 1993-2017 by Florian Klaempfl and others
Target OS: Linux for x86-64
Compiling test.pas
Linking test
/usr/bin/ld.bfd: warning: link.res contains output sections; did you forget -T?
7 lines compiled, 0.1 sec

% ./test
Runtime error 106 at $000000000042968D
  $000000000042968D
  $000000000040018C

If I remove the uses clause it runs fine.  Why is the keyboard unit,
which isn't even being used, causing this error?

Kevin

-- 
Kevin Lyda
Galway, Ireland