Re: 'do {} while (0)' replacement

Richard Harvey Chapman <hchapman-gcc-help@xxxxxxxx> · Fri, 10 Oct 2008 10:22:49 -0400

Jens Kilian wrote:
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
You'll still get the "ambiguous else" warning.

Harvey