skaller writes: > > On Fri, 2007-10-26 at 14:24 -0700, Ian Lance Taylor wrote: > > > This is basically a public relations exercise. I doubt this > > optimization is especially important, so I think it's OK to > > disable it to keep people happy. Even though the optimization > > has been there since gcc 3.4 and nobody noticed. > > Most people didn't have multi-core processors then..
It's partly that. It's also that some people, particularly kernel hackers, are super-paranoid about this sort of thing, and that's all to the good. The window of vulnerability introduced by this "optimization" is extremely small -- but it is there. As far as I can tell from reading the Linux kernel list, almost every kernel programmer wants this transformation to be removed. I suspect that most pthreads programmers do too. So yeah, it's mostly a public relations exercise, but a worthwhile one. I look forward to going to the kernel list and telling them we've done what they wanted us to do. They're an important part of our community. Andrew.
