Messages in this thread | | | Date | Mon, 28 Jun 1999 05:13:36 -0400 (EDT) | From | Alexander Viro <> | Subject | Re: do {} while(0) |
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On Mon, 28 Jun 1999, wu_yb wrote:
> There are many > do {} while(0) > do { ... } while(0) > in kernel source. > Any difference between {} and do {} while(0); or ^ Notice the absence of ; in definition. It's an old trick. #define X {} is bad since if (foo) X; else bar(); will be screwed. do-while eats a semicolon.
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