const \CPP_TEST0 = __COUNTER__;
const \CPP_TEST1 = __COUNTER__;
const \CPP_TEST2 = __COUNTER__;

#define a(x,y) x ## y
#define b(x,y) a(x,y)
#define c(x) b(x, __COUNTER__)
const \CPP_TEST3 = c(300);
const \CPP_TEST4 = c(400);
const \CPP_TEST5 = c(500);