2013-04-23 00:32:45

by H. Peter Anvin

[permalink] [raw]
Subject: Re: Unsigned widening casts of binary "not" operations..

On 04/22/2013 05:15 PM, Linus Torvalds wrote:
> (It turns out that any use of "UINT_MAX" for a "long" value also results in
> this warning, because we define it as "~0ul", so there are other cases of
> spurious things where we *intentionally* drop the high bits).

I'm responsible for this particular piece of drain bramage... we should
probably just open-code the correct types conditional on the sizes like
userspace does.