lkml.org 
[lkml]   [2003]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: BUGed to death
    Date
    > > No, I meant what happens if BUG() is non-trivial and BUG_ON is a no-op.
    > > I thought it might give an indication of whether time was being lost
    > > evaluating the condition (occurs with BUG and BUG_ON), or mispredicting
    > > the branch (only occurs with BUG).
    >
    > Mmmm. wouldn't that just optimise away the BUG_ONs, but not the BUGs ?
    > Which will tell you something, but I'm not sure anything interesting.
    > My impression is that if I do:
    >
    > if (foo)
    > do {} while (0);
    >
    > the compiler will just ditch the whole thing, and not evaluate foo.
    > I'll admit to not having checked that, but still ....

    Good point. So much for trying to get info without converting a bunch
    of BUG's into BUG_ON's...

    Duncan.
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:34    [W:0.027 / U:0.124 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site