Variable length arg lists for macros

[David DiGiacomo]

In article <13573 at mimsy.UUCP> chris at mimsy.UUCP (Chris Torek) writes:
>or, if you need {}s,
>
>	#define	MAC() do { mac_statements } while (0)

That's nice, but lint churlishly complains about "constant in conditional
context".  To avoid this, use:

#ifdef lint
int _ZERO_;
#else
#define _ZERO_ 0
#endif

#define _STMT(op)	do { op } while (_ZERO_)

#define	MAC()		_STMT(mac_statements)