Re: Is gcc thread-unsafe?

[Linus Torvalds]

On Fri, 26 Oct 2007, Andi Kleen wrote:
> > 
> > Marking volatile I think is out of the question. To start with,
> > volatile creates really poor code (and most of the time we actually
> > do want the code in critical sections to be as tight as possible).
> 
> Poor code is better than broken code I would say.

No. A *working*compiler* is better than broken code.

There's no way to use volatile for these things, since it can hit 
*anything*. When the compiler generates buggy code, it's buggy code. We 
can't add volatiles to every single data structure. We'd be better off 
having a million monkeys on crack try to hand-assemble the thing, than 
having a totally buggy compiler do it for us.

		Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/