scc

 1/*
 2 * f(2) will expand to 2*g, which will expand to 2*f, and in this
 3 * moment f will not be expanded because the macro definition is
 4 * a function alike macro, and in this case there is no arguments.
 5 */
 6#define f(a) a*g
 7#define g f
 8
 9int
10main(void)
11{
12        int f = 0;
13
14        return f(2);
15}