1### Compilation failed: 2 3error: 1: unsized arrays are not permitted here 4struct S { int disallowed[]; } x; 5 ^ 6error: 2: struct 'S' must contain at least one field 7struct S {} y; 8^^^^^^^^^^^ 9error: 2: symbol 'S' was already defined 10struct S {} y; 11^^^^^^^^^^^ 12error: 5: type mismatch: '!=' cannot operate on 'S', 'S' 13 return x != y; 14 ^^^^^^ 154 errors 16