1 files changed, 5 insertions, 1 deletions
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 9e7f28b24d4..7c87aa1e817 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -9540,7 +9540,11 @@ Decl *Sema::ActOnIvar(Scope *S,
     S->AddDecl(NewID);
     IdResolver.AddDecl(NewID);
   }
-
+  
+  if (LangOpts.ObjCNonFragileABI2 &&
+      !NewID->isInvalidDecl() && isa<ObjCInterfaceDecl>(EnclosingDecl))
+    Diag(Loc, diag::warn_ivar_in_interface_block);
+  
   return NewID;
 }