| ### Compilation failed: | |
| error: 1: interface blocks are not allowed in this kind of program | |
| in InterfaceBlockIn { int x; } i[3]; | |
| ^^^^^^^^^^^^^^^^ | |
| error: 2: interface blocks are not allowed in this kind of program | |
| out InterfaceBlockOut { int x; } o[3]; | |
| ^^^^^^^^^^^^^^^^^ | |
| 2 errors |