[clean-list] freopen fails

[Erik Zuurbier]

Dear Cleaners,

I have a case where freopen fails. The comments in the StdFile library say:

freopen  :: !*File !Int -> (!Bool,!*File)
/* Re-opens an open file in a possibly different mode.
 The boolean indicates whether the file was successfully closed before reopening. */

So I look at fclose:

 fclose :: !*File !*f -> (!Bool,!*f)
   /* Closes a file */

I can imagine that closing fails if I remove a file by hand in the mean time, but that is not the case in my program.
What could be the other conditions under which closing a file fails?

Regards Erik Zuurbier
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