His original code gives no warnings. And 0 + $wd doesn't evaluate to 0. I think it evaluates to the address of the object.

Looking at the code for fpathconf in glibc, I see that, for 16 of the 21 configuration parameters, fd is ignored—except to check that it is >= 0. So I think what's happening is that when the objects are being allocated above (void *)((unsigned int)-1 >> 1), when it's passed as an int, it's negative, so it gives an error.

In reply to Re^4: Why does fpathconf give "bad file descriptor"? by ReturnOfThelonious
in thread Why does fpathconf give "bad file descriptor"? by madscientist

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