1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 class A { }; 3 4 class B1 : A { }; 5 6 class B2 : virtual A { }; 7 8 class B3 : virtual virtual A { }; // expected-error{{duplicate 'virtual' in base specifier}} 9 10 class C : public B1, private B2 { }; 11 12 13 class D; // expected-note {{forward declaration of 'D'}} 14 15 class E : public D { }; // expected-error{{base class has incomplete type}} 16 17 typedef int I; 18 19 class F : public I { }; // expected-error{{base specifier must name a class}} 20 21 union U1 : public A { }; // expected-error{{unions cannot have base classes}} 22 23 union U2 {}; 24 25 class G : public U2 { }; // expected-error{{unions cannot be base classes}} 26 27 typedef G G_copy; 28 typedef G G_copy_2; 29 typedef G_copy G_copy_3; 30 31 class H : G_copy, A, G_copy_2, // expected-error{{base class 'G_copy' (aka 'G') specified more than once as a direct base class}} 32 public G_copy_3 { }; // expected-error{{base class 'G_copy' (aka 'G') specified more than once as a direct base class}} 33 34 struct J { char c; int i[]; }; 35 struct K : J { }; // expected-error{{base class 'J' has a flexible array member}} 36