Tony Finch wrote: > > With just an "&" or an "|", you actually need a much less complicated > > state machine to evaluate a constant expression. With the "||"/"&&", > > you almost have to do an edge associative operation, which implies a > > much more complex state machine for the preprocessor, I think. > > No -- the short-circuiting behaviour of && and || only matters if > you can have side-effects, which you can't in the preprocessor, > so there is no need to implement it (unifdef doesn't).
Consider: #if _DEFINED_SUPPORTED && defined(SOMETHING) -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
