ref: 56f48a1788a3d7e1e6ee53d58f4849c6b9b3a01c dir: /tests/cc/execute/0148-cpp-string.c/
#define x(y) #y int main(void) { char *p; p = x(hello) " is better than bye"; return (*p == 'h') ? 0 : 1; }