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    SubjectRe: do { } while (0) question
    Russell King wrote:
    > On Tue, Aug 01, 2006 at 11:45:53AM +0159, Jiri Slaby wrote:
    >> Peter Zijlstra wrote:
    >>> On Tue, 2006-08-01 at 02:03 -0700, Hua Zhong wrote:
    >>>>> #if KILLER == 1
    >>>>> #define MACRO
    >>>>> #else
    >>>>> #define MACRO do { } while (0)
    >>>>> #endif
    >>>>>
    >>>>> {
    >>>>> if (some_condition)
    >>>>> MACRO
    >>>>>
    >>>>> if_this_is_not_called_you_loose_your_data();
    >>>>> }
    >>>>>
    >>>>> How do you want to define KILLER, 0 or 1? I personally choose 0.
    >>>> Really? Does it compile?
    >>> No, and that is the whole point.
    >>>
    >>> The empty 'do {} while (0)' makes the missing semicolon a syntax error.
    >> Bulls^WNope, it was a bad example (we don't want to break the compilation,
    >> just not want to emit a warn or an err).
    >
    > Your sentence does not make sense, but I'm going to take it as saying
    > that you disagree that the above will cause a syntax error. Try it:

    No, my code is bad, not his thoughts.

    regards,
    --
    <a href="http://www.fi.muni.cz/~xslaby/">Jiri Slaby</a>
    faculty of informatics, masaryk university, brno, cz
    e-mail: jirislaby gmail com, gpg pubkey fingerprint:
    B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E
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