DragonFly kernel List (threaded) for 2009-08
Re: size_t changes and 32/64-bit, kernel uio_resid type changed.
Matthew Dillon wrote:
> size_t has been changed to unsigned long (and ssize_t to long). I may
> revert this prior to the release if we hit pkgsrc problems. The change
> will be kept for 64-bit machines.
> The change on 32 bit machines seems to do a pretty good job generating
> compiler warnings on 32-bit machines for code that will break on
> 64-bit machines. Because of this I think it is worth seeing how badly
> pkgsrc breaks with the change. If it breaks too much we will revert
> it on 32 bit machines.
As it turns out, it breaks C++ ABI. IMHO it's too high cost for just to
get better warnings. And massive breakage of software on 64-bit machines
is thing of past. In fact I see opposite more nowadays - software written
on 64-bit platforms breaks on 32-bit machines ("Who uses 32-bit nowadays?