`interesting' program

[Maarten Litmaath]

----------8<----------8<----------8<----------8<----------8<----------
/* Any comments? */

struct	foo {
		int	mids;
	};


struct	foo	zork()
{
	struct	foo	foo;


	foo.mids = 79;
	return foo;
}


/*
 * Try:
 *	cc -DFOO foo.c
 *	cc -DBAR foo.c
 *	cc foo.c
 *	gcc -DFOO foo.c
 *	gcc -DBAR foo.c
 *	gcc foo.c
 *
 * and compare!
 */

main()
{
#if	!FOO && !BAR
	struct	foo	bar;


	bar = zork();
#endif
	printf("%d\n",
#if	FOO
		zork().mids
#else
#if	BAR
		(&zork())->mids
#else
		bar.mids
#endif
#endif
	);
}
----------8<----------8<----------8<----------8<----------8<----------
Results:
1)	Sun 3/50 w/ SunOS 3.5 cc dislikes FOO, likes BAR
2)	Sun 3/50 w/ SunOS 3.5 gcc 1.32 likes FOO, dislikes BAR
3)	Sun 4/280 w/ SunOS Sys4-3.2 cc likes FOO, likes BAR

IMHO 2) is the winner! ISEHO 3) is right.

I say: zork() is a constant of type struct foo, so you cannot take its
address and it isn't an lvalue.
SE says: zork() is the name of a struct foo, so you CAN take its address.
-- 
"I HATE arbitrary limits, especially when |Maarten Litmaath @ VU Amsterdam:
   they're small."  (Stephen Savitzky)    |maart at cs.vu.nl, mcvax!botter!maart