Fix rdar://6770142 - Class and qualified id's are compatible, just like
Class and unqualified id's are.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68899 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExprObjC.cpp b/lib/Sema/SemaExprObjC.cpp
index 8d8fae0..0c1f144 100644
--- a/lib/Sema/SemaExprObjC.cpp
+++ b/lib/Sema/SemaExprObjC.cpp
@@ -681,11 +681,15 @@
   // Allow id<P..> and an 'id' or void* type in all cases.
   if (const PointerType *PT = lhs->getAsPointerType()) {
     QualType PointeeTy = PT->getPointeeType();
-    if (Context.isObjCIdStructType(PointeeTy) || PointeeTy->isVoidType())
+    if (PointeeTy->isVoidType() ||
+        Context.isObjCIdStructType(PointeeTy) || 
+        Context.isObjCClassStructType(PointeeTy))
       return true;
   } else if (const PointerType *PT = rhs->getAsPointerType()) {
     QualType PointeeTy = PT->getPointeeType();
-    if (Context.isObjCIdStructType(PointeeTy) || PointeeTy->isVoidType())
+    if (PointeeTy->isVoidType() ||
+        Context.isObjCIdStructType(PointeeTy) || 
+        Context.isObjCClassStructType(PointeeTy))
       return true;
   }