checking package dependencies
compiling FlushAfterClose.bsv
code generation for sysFlushAfterClose starts
Error: "Prelude.bs", line 3827, column 20: (S0085)
  Failure during a file handle operation:
    illegal operation
  During elaboration of `hFlush' at "FlushAfterClose.bsv", line 10, column 4.
  During elaboration of `sysFlushAfterClose' at "FlushAfterClose.bsv", line 2,
  column 8.