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    SubjectRe: [PATCH] Change ZERO_SIZE_PTR to point at unmapped space
    On 15:29 Sat 30 May     , Linus Torvalds wrote:
    > On Sat, 30 May 2009, Larry H. wrote:
    > >
    > > The ZERO_OR_NULL_PTR macro is changed accordingly. This patch does
    > > not modify its behavior nor has any performance nor functionality
    > > impact.
    > I'm sure it makes a code generation difference, with (a) big constants and
    > (b) no longer possible to merge the conditional into one single one.

    Like I said in the reply to Peter, this is 3 extra bytes for amd64 with
    gcc 4.3.3. I can't be bothered to check other architectures at the


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