1 /* 2 TEST_OUTPUT: 3 --- 4 fail_compilation/fail7859.d(9): Error: undefined identifier `NonExistent` 5 --- 6 */ A(alias B)7 template A(alias B) {} 8 9 mixin template C(alias B = cast(NonExistent)null) { 10 alias A!B D; 11 } 12 13 mixin C!(); 14 15