> From: "Dave Korn" <dave.korn@xxxxxxxxxx> > Date: Mon, 29 Oct 2007 01:16:07 -0000 > > > Thing is, if you disable all optimisations that are potentially > > unsafe in the presence of threads, won't you just get the same > > effect as if you had used volatile anyway, only on every single > > variable in the program instead of just the ones the programmer has > > designated as sensitive? > > This is not really what is being suggested at all. > > The compiler simply cannot speculatively load or store to variables > with global visibility. Any optimization is good, and GCC's is great, though debugging it is hell, and I do not see the problem with an option to turn off somebody's pet feature when I need to. It really is up to the programmer to decide how the program behaves, not a standards committee. Just my 0.02, again.
