The following reply was made to PR kern/176628; it has been noted by GNATS.
From: Dmitry Marakasov <amd...@amdmi3.ru> To: Bruce Evans <b...@optusnet.com.au> Cc: freebsd-gnats-sub...@freebsd.org, freebsd-bugs@FreeBSD.org Subject: Re: misc/176628: [stdint.h] use safer way of definint __WORDSIZE Date: Thu, 7 Mar 2013 00:38:44 +0400 * Bruce Evans (b...@optusnet.com.au) wrote: > > __WORDSIZE is always defined as 32, which is wrong on 64bit systems. > > > > I have two solutions for the problem. > > First one uses the same way of testing for 64bit pointers, but doesn't > > define __WORDSIZE if it can't be detected reliably. > > C++ code should be happier with __WORDSIZE being undefined that with it > being defined to garbage. > > > Second one uses different way of testing for 64bit pointers with checking > > for __LP64__. > > > > The second one looks much more useful, but I'm not sure if __LP64__ has > > the right semantics and will work in all platforms. > > Not right, but better than the UINTPTR_MAX test. Both are broken and default > to __WORDSIZE == 32 if pointers are not precisely 64 bits. Actually, the > __LP64__ test is more fragile, since it fails if __L32_P64__ and many systems > use that. Just not any FreeBSD systems, so it is valid to use a hackish > ifdef that only works on current FreeBSD systems. So, what solution do you think is the best in current situation? -- Dmitry Marakasov . 55B5 0596 FF1E 8D84 5F56 9510 D35A 80DD F9D2 F77D amd...@amdmi3.ru ..: jabber: amd...@jabber.ru http://www.amdmi3.ru _______________________________________________ freebsd-bugs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
