##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: September 2016
# Modified: 2016-10-03/23:14-0400
##+
#
# preproc-line, demonstrate $line override preprocessor directive
#
# This feature is mainly for use with machine generated sources
#
procedure main()
$ifdef _MSDOS
    write("MSDOS available, GetSpace and FreeSpace")
    A := GetSpace(64) | stop("GetSpace failed")
    FreeSpace(A)
$else
# error will be reported as coming from line 2 of sample.icn
$line 1 "sample.icn"
$error MSDOS features required for this program
$endif
end