Re: A few proposals from the C standards committee

["Paul E. McKenney" <paulmck@kernel.org>]

On Tue, Jan 23, 2024 at 12:24:44PM -0800, Linus Torvalds wrote:
> On Tue, 23 Jan 2024 at 12:19, H. Peter Anvin <hpa@zytor.com> wrote:
> >
> > > n3203 Strict order of expression evaluation
> > >       I do like it.  The 1980s were over a long time ago.
> >
> > The question is: is this going to wreck havoc with performance. The C++
> > reference implies it won't, though.
> 
> Well, they also had numbers from an actual implementation showing that
> it didn't (ie "win some, lose some").
> 
> The "ordering is undefined" is, I think, almost entirely an effect of
> "compilers weren't that smart, and implementations differed".
> 
> So I'd love for sequence points to go away. They are one of the more
> subtle parts of C, and I do not believe that they have any real
> advantage any more.
> 
> (And by "go away" I obviously mean "everything is a sequence point",
> not "nothing is a sequence point" - so they'd go away as a concept,
> because they'd become a non-issue).

Agreed, and here is hoping!

							Thanx, Paul