On Tue, Jun 28, 2005 at 03:39:38PM +0100, Dave Korn wrote: > ----Original Message---- > >From: Olivier Galibert > >Sent: 28 June 2005 15:25 > > > In particular, a very large number of C and C++ programs are written > > with the assumptions: > > This is a bad line of reasoning in general. There is a vast amount of bad > software in the world, some blatantly buggy, some subtly-incorrect. To > attempt to fix it all in the compiler rather than the source seems a bit > bass-ackwards to me!
Welcome to the real world. Useful compilers are not an exercise in theorical computing, especially for languages like C or C++. > > - sizeof(int) == 4, sizeof(long long) == 8 > > > > - sizeof(long) == sizeof(void *) == sizeof(void (*)()) > > > > Break them and see your compiler rejected by pretty much everybody. > > And what about 64 bit architectures? Your assumptions are already widely > invalid and only going to get more so. They aren't. They have: - sizeof(int) == 4, sizeof(long long) == 8 - sizeof(long) == sizeof(void *) == sizeof(void (*)()) == 8 and nobody in his right mind would seriously propose to change sizeof(int) to 8 or sizeof(long long) to 16. IA-64 may have an issue with sizeof(void (*)()) from what I've heard, but they have been laughed out of the market. OG.
