objective-C++: issue diagnostic when ivar type is

an abstract c++ class. // rdar://12095239


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162052 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 29 insertions, 0 deletions

diff --git a/test/SemaObjCXX/abstract-class-type-ivar.mm b/test/SemaObjCXX/abstract-class-type-ivar.mm
new file mode 100644
index 0000000000..823e9c197d
--- /dev/null
+++ b/test/SemaObjCXX/abstract-class-type-ivar.mm
@@ -0,0 +1,29 @@
+// 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{{ivar 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}}
+};