On Mon, 12 Jan 2009, Bernd Schmidt wrote: > > However, if the compiler chooses to put them into the same stack > location, the RTL-based alias analysis will happily conclude (based on > the differing types) that the reads from A and the writes to B can't > possibly conflict, and some passes may end up reordering them. End > result: overlapping lifetimes and overlapping stack slots. Oops. Yes, I came to the same conclusion. Of course, I knew a-priori that the real bug was using type-based alais analysis to make (statically visible) aliasing decisions, but I realize that there are people who never understood things like that. Sadly, some of them worked on gcc. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
