'do {} while (0)' replacement

[Jens Kilian]

> On Wednesday 08 October 2008, Richard Harvey Chapman wrote:
> > #define BREAK_ON_ERROR(i)     \
> >   if (1)                      \
> >   {                           \
> >     if (i < 0)                \
> >       break;                  \
> >   }                           \
> >   else do                     \
> >        {                      \
> >        } while (0)            \

How about

#define BREAK_ON_ERROR(i) if ((i) >= 0) { /* whee! */ } else break

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