ref: c1b4b8354a76cc8c9aa13757e8b3db8d1b5a7c39 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; }