[Octave-bug-tracker] [bug #51388] Current directory does not change immediatly with "cd" on some systems

[John W. Eaton]

Follow-up Comment #10, bug #51388 (project octave):

I didn't notice the attached file earlier.  I used the code in the inline code
block.

If it is the attached file that shows the problem for you, then I don't
understand why you are blaming cd.  Where is the cd in that?

Is the problem that the file that xlswrite is supposed to produce is not
created before the call to exist?  If so, how is xlswrite creating the file on
the systems where it fails?  Is it using some external process that might not
be flushing the file contents before it returns?

Can you reproduce the problem if you use fopen/fwrite/fclose instead?  For
example, something like this:


more off

filename = [mfilename('fullpath'), '.xlsx'];
for i= 1:10000
  if exist(filename, "file")==2
    delete(filename);
  end
  if exist(filename, "file")==2
    error ("File NOT deleted!, i = %d", i);
  end
  t_xlsx = tic;
  fid = fopen (filename, "w");
  fwrite (fid, rand (100));
  fclose (fid);
  toc (t_xlsx)
  if !exist (filename)
    error ("xlsx file NOT created!, i = %d", i);
  endif
endfor



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