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    SubjectRe: [RFC][PATCH] printk: Add %pb to print bitmaps
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    On Wed, 2012-05-09 at 16:15 +0200, Ingo Molnar wrote:
    > So, if someone specifies an incomplete "%pb" format - fmt[1]
    > will be 0 and we take precision as the length - presumably also
    > 0.

    yes, printf_spec is initialized to 0s.

    > We stick that 0 into:
    >
    > > + len = bitmap_scnlistprintf(buf, end - buf, ptr, bits);
    >
    > Will that work?

    Yes, bitmap_scnlistprintf() will only set buf[0] = 0 (which will be
    overwritten by a possible next printf token) and return 0 length not
    advancing the ptr.




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