file i/o troubles

[abythell at nortelnetworks.com (Andrew Bythell)]

Hi -

Attached is a sample application that demonstrates the problem.

Andrew.

jennifer averett wrote:
> 
> Do you have a complete test that shows this problem that you
> could submit?  It is much easer to reproduce and
> fix problems that way.
> 
> Thanks
> Jennifer
> 
> Andrew Bythell wrote:
> 
> > Hello -
> >
> > I am seeing strange behaviour when writing to files using the IMFS and
> > rtems-ss-20010326.  I had this same problem with earlier snapshots too.
> > Consider:
> >
> > FILE *fp = fopen("somefile", "w");
> > fprintf(fp, "line1\n");
> > fclose();
> > fp = fopen("somefile", "a");
> > fprintf("fp, "line2\n");
> > fclose();
> >
> > The first time I call this routine, 'somefile' is created and contains:
> >
> > line1
> > line2
> >
> > which is fine.  Subsequent calls, using the same or different filename,
> > insert junk (NULL characters) between line1 and line2:
> >
> > line1
> > ^@^@^@^@^@^@...
> > line2
> >
> > Can anyone offer an explanation and/or solution?
> >
> > --
> > Andrew Bythell
> > Nortel Networks    System Verification
> > Ottawa, Ontario Canada    esn.39.56930
> > tel.613.765-6930      fax.613.763-7795
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