file i/o troubles

Andrew Bythell abythell at nortelnetworks.com
Thu Apr 19 17:49:06 UTC 2001


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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