New and bogus(!) warning produced by sparse.

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Hi Linus,

I just did a git pull on sparse and it produced a new and I believe 
bogus warning when trying to assign a value to a bit field member.  The 
warning is:

warning: generating address of non-lvalue (1)

Below is an example program that triggers the warning when you run:

	sparse sparse-test.c

Best regards,

	Anton
-- 
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/ & http://www-stu.christs.cam.ac.uk/~aia21/

--- sparse-test.c ---

int main(void)
{
	struct {
		unsigned bit1:1;
		unsigned bit2:1;
	} bits = { 0, 0 };

	bits.bit1 = 1; /* sparse warns here! */
	bits.bit2 = 0; /* sparse warns here! */
	return 0;
}
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