aihc-cpp-2.0.0.0: test/Test/Fixtures/progress/function-macro-arg-rescan.hs
#define ID(x) x #define TWICE(x) ID(x) + ID(x) #define SUM(a,b) (a + b) c = ID(ID(7)) d = TWICE(SUM(1, 2))
#define ID(x) x #define TWICE(x) ID(x) + ID(x) #define SUM(a,b) (a + b) c = ID(ID(7)) d = TWICE(SUM(1, 2))