objc: warn if NSObject attribute appears other than in a typedef.

// rdar://10453342

llvm-svn: 145358

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 74d22e7efee..e60cd633695 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -1746,6 +1746,10 @@ static void handleObjCNSObject(Sema &S, Decl *D, const AttributeList &Attr) {
       return;
     }
   }
+  else {
+    S.Diag(D->getLocation(), diag::warn_nsobject_attribute);
+    return;
+  }
   D->addAttr(::new (S.Context) ObjCNSObjectAttr(Attr.getRange(), S.Context));
 }