Re: New and bogus(!) warning produced by sparse.

[Linus Torvalds]

On Fri, 30 Sep 2005, Linus Torvalds wrote:
> 
> I see why it happens, will fix sparse momentarily (btw, for sparse bugs, 
> use "linux-sparse@xxxxxxxxxxxxxxx" rather than LKML - since this is 
> clearly not a kernel problem ;)

Side note: it has nothing to do with bit-fields: it happens for any 
structure member that sparse will have incorrectly figured out as having a 
value pre-assigned to it. So even

	struct {
		int value;
	} dummy = { 0 };

	dummy.value = 1;

will generate the warning. It isn't that a bitfield cannot have it's 
address taken, it's that sparse has incorrectly "optimized" dummy.value to 
be 0, so it ends up evaluating it as

	0 = 1;

and says that it's trying to assign a non-lvalue.. Very stupid.

		Linus
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