On Mon, 10 Nov 2008 23:48:43 +0000 Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: > > That's a regression in current gcc, surely? > > Oh and as a PS: Gcc is I believe right because if the loop is run zero > times then pos = NULL (ie n == NULL so the first BUG_ON fires) Whoa. That would be clever of it. On about half the architectures, BUG is not considered to be no-return. Dunno if that's a gcc shortcoming or if the architectures just haven't implemented it properly yet. This causes those architectures to generate quite a few warnings in generic code which don't appear on x86 (this would be one such case if your above theory is correct). This is fairly irritating of those architectures, as I keep on going in asking "what's up" and deciding "oh, that again". -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
