Re: [HACKERS] inet data type regression test fails

> The inet regression test has been failed on my LinuxPPC. While
> investigating the reason, I found a code that doesn't work on
> LinuxPPC. From network_broadcast() in utils/adt/network.c:
>
> int addr = htonl(ntohl(ip_v4addr(ip)) | (0xffffffff >> ip_bits(ip)));
>
> Here ip_bits() returns from (unsigned char)0 to 32. My question is:
> what is the correct result of (0xffffffff >> ip_bits())?

I should have said that:

what is the correct result of (0xffffffff >> ip_bits()) if ip_bits() == 32?

> 1. 0x0
> 2. 0xffffffff (actually does nothing)
>
> LinuxPPC is 1. FreeBSD and Solaris are 2. network_broadcast() seems to
> expect 2. My guess is shifting over 32bit against a 32bit integer is
> not permitted and the result is platform depedent. If this would true,
> it could be said that network_broadcast() has a portabilty
> problem. Comments?
> ---
> Tatsuo Ishii
>