I guess you have two choices here:

1) rewrite the rename function.
2) check to see if the file exist before you rename it.

As to why it does NOT report an error ... I guess who ever wrote the rename function did NOT feel like this is an error.

Plankton: 1% Evil, 99% Hot Gas.
NOTs added after dmitri pointed out my mistake. Kinda of ironic ain't it. :/

In reply to Re: [OT] rename(2) -- renaming file to itself produces no error. by Plankton
in thread [OT] rename(2) -- renaming file to itself produces no error. by dmitri

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