gcc/testsuite/gdc.test/fail_compilation/ice8100.d

/*
TEST_OUTPUT:
---
fail_compilation/ice8100.d(10): Error: no property `Q` for type `ice8100.Bar!bool`
fail_compilation/ice8100.d(11): Error: template instance `ice8100.Foo!(Bar!bool)` error instantiating
fail_compilation/ice8100.d(12):        instantiated from here: `Bar!bool`
---
*/

class Foo(T1) { T1.Q r; }
class Bar(T2) : Foo!(Bar!T2) {}
Bar!bool b;