fix off-by-one in dup2

Christopher Faylor
Tue Oct 15 14:06:00 GMT 2013

On Wed, Sep 25, 2013 at 05:26:25PM -0600, Eric Blake wrote:
>Solves the segfault here:
>but does not address the fact that we are still screwy with regards to

Corinna reminded me about this.

Sorry for the delay in responding.  I was investigating if setdtablesize
should set an errno on error but it is difficult to say if it should
since it seems not to be a POSIX or Linux.  So, I guess we can just say
that it should set EINVAL.  Would you mind making that minor change and
checking this in?


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