ref: a951173828d4c5fad5de2c54576cb01ad484dbae dir: /tests/cc/execute/0154-if_defined.c/
#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; }