clang-1/test/SemaObjCXX/abstract-class-type-ivar.mm

// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
// rdar://12095239

class CppAbstractBase {
public:
    virtual void testA() = 0;
    virtual void testB() = 0; // expected-note {{unimplemented pure virtual method 'testB' in 'CppConcreteSub}}
    int a;
};

class CppConcreteSub : public CppAbstractBase {
    virtual void testA() { }
};

@interface Objc  {
    CppConcreteSub _concrete; // expected-error{{instance variable type 'CppConcreteSub' is an abstract class}}
}
- (CppAbstractBase*)abstract;
@end
@implementation Objc
- (CppAbstractBase*)abstract {
    return &_concrete;
}
@end

class Cpp {
public:
    CppConcreteSub sub; // expected-error {{field type 'CppConcreteSub' is an abstract class}}
};