ref: fcec548cff5349d73e1c64a99aee77ce2331858d
dir: /tests/cc/execute/0153-cpp_string.c/
#define M1(x,y) "This is a string $ or # or ## " #x y
#define STR "This is a string $ or # or ## and it is ok!"
int
main(void)
{
char *s, *t = M1(and, " it is ok!");
for (s = STR; *s && *s == *t; ++s)
++t;
return *s;
}