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Re: CVS commit: src/sys/kern
On Tue, Jan 31, 2012 at 22:53:37 +0000, Alexander Nasonov wrote:
> David Laight wrote:
> > I don't believe there is a problem using m, just m[non-constant-expr].
> Practically speaking, m is not a problem but the standard says
> ... to the structure member (designated by member-designator), ...
Well, the standard also says that:
The type and member designator shall be such that given
static type t;
then the expression &(t.member-designator) evaluates to an
address constant. (If the specified member is a bit-field,
the behavior is undefined.)
Note that the standard doesn't actually bother to define
"memeber-designator" formally, but see 6.7.8 Initialization. We can
haggle about the finer points of specific wording used in the relevant
paragraphs, but I think the intended meaning is pretty clear.
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