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    SubjectRe: [PATCH] Fix CPU bitmask truncation
    William Lee Irwin III <wli@holomorphy.com> writes:
    |> ===== include/linux/init_task.h 1.19 vs edited =====
    |> --- 1.19/include/linux/init_task.h Sun Sep 29 07:02:55 2002
    |> +++ edited/include/linux/init_task.h Fri Dec 20 02:22:04 2002
    |> @@ -63,7 +63,7 @@
    |> .prio = MAX_PRIO-20, \
    |> .static_prio = MAX_PRIO-20, \
    |> .policy = SCHED_NORMAL, \
    |> - .cpus_allowed = -1, \
    |> + .cpus_allowed = ~0UL, \

    On Fri, Dec 20, 2002 at 01:17:24PM +0100, Andreas Schwab wrote:
    > This is useless. Assigning -1 to any unsigned type is garanteed to give
    > you all bits one, and with two's complement this also holds for any signed
    > type.

    Not so on all gcc versions. The rest of the world can figure out what
    to do about the versions that do not.


    Bill
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