1 // RUN: %clang_cc1 -fsyntax-only -verify -fms-extensions %s
2 
3 struct __declspec(uuid("00000000-0000-0000-C000-000000000046")) IUnknown {
4   void foo();
5 };
6 
7 __interface NoError : public IUnknown {};
8 void IUnknown::foo() {}
9 // expected-error@+1{{interface type cannot inherit from}}
10 __interface HasError : public IUnknown {};
11