ref: 214e7b3030b009afc4ec0085f098f5212909e91b dir: /tests/execute/0154-if-defined/
#if defined(FOO) int a; #elif !defined(FOO) && defined(BAR) int b; #elif !defined(FOO) && !defined(BAR) int c; #else int d; #endif int main(void) { return c; }