4 fail_compilation/fail9790.d(13): Error: undefined identifier `_Unused_`
5 fail_compilation/fail9790.d(20): Error: template instance `fail9790.foo!()` error instantiating
6 fail_compilation/fail9790.d(18): Error: undefined identifier `_Unused_`
7 fail_compilation/fail9790.d(21): Error: template instance `fail9790.bar!()` error instantiating
13 enum bool _foo = _Unused_._unused_;
18 enum bool bar = _Unused_._unused_;