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    SubjectRe: [PATCH] Fix CPU bitmask truncation
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    On Fri, 2002-12-20 at 17:00, Bjorn Helgaas wrote:
    > This was an issue with gcc 2.96 on a 64-way IA64 box. I don't have
    > access to one at the moment, but as I remember, without the 2.4 changes:
    >
    > - ((p)->cpus_runnable & (p)->cpus_allowed & (1 << cpu))
    > + ((p)->cpus_runnable & (p)->cpus_allowed & (1UL << cpu))
    >
    > nothing would get scheduled on CPUs 32-63. I guess those changes
    > aren't controversial, though.

    Is this a C quirk or a compiler bug ?

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