On Mon, Jun 24, 2013 at 06:05:39PM +0200, Armin Rigo wrote:

> Shooting in the dark, but one possible reading of the man page shows
> that when readdir() returns a non-null pointer, the value of errno
> might be randomly modified.

Yes, this is true and bit me in a different context just over a year ago:

  http://comments.gmane.org/gmane.os.openbsd.tech/27909

Philip Guenther's message is worth reading to get some idea of the
particular, quasi-legal language, that POSiX uses (and that confused me).


Laurie
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