According to Selecting on STDIN in Win32 and my own experience, on Windows select only works on sockets. You can work around this problem by creating a socket with socketpair, and using that instead.

I have some sample code for a very similar problem in Windows weirdness after fork, dup2.

In reply to Re: Windows filehandles and fork by sgifford
in thread Windows filehandles and fork by egarland

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