1 /* Any directive can be preceded by a space. */ 2 #version 300 3 #pragma Testing spaces before hash 4 # 5 #line 3 6 #define FOO 7 #ifdef FOO 8 yes 9 #endif 10 #if 0 11 #elif defined FOO 12 yes again 13 #endif 14 #if 0 15 #else 16 for the third time, yes! 17 #endif 18 #undef FOO 19 #ifndef FOO 20 yes, of course 21 #endif 22