4 fail_compilation/ice12902.d(20): Error: variable `ice12902.main.__dollar` - type `void` is inferred from initializer `s.opDollar()`, and variables cannot be of type `void`
5 fail_compilation/ice12902.d(20): Error: expression `s.opDollar()` is `void` and has no value
13 void opIndexAssign() { }
14 void opSliceAssign() { }