Youve missed the final ";" in your thinking...

Type-out the macro-replacement manually... and keep an eye on the red ";"
LFAssert(foopointer, "Some error message");
becomes
if(!(foopointer)){"Some error message"); sys_exit(NULL);};
You see?

I tend to "fake" this with a REALLY ugly hack like so...
Code:
#define LFAssert(con, msg) if(!(con)){error(msg); sys_exit(NULL);} var who_cares=0
//[[condition and message shortened just for display purposes...]]

which then becomes
if(!(foopointer)){"Some error message"); sys_exit(NULL);} var who_cares=0;

VERY ugly, but work MOST of the time...

Mind you, I wish there was a better way...

"There is no fate but what WE make." - CEO Cyberdyne Systems Corp.
A8.30.5 Commercial