[Objective-C Sema]. Issue availability/deprecated warning when

there is a uinque method found when message is sent to receiver 
of 'id' type. // rdar://18848183

llvm-svn: 221562

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaExprObjC.cpp b/clang/lib/Sema/SemaExprObjC.cpp
index ae9942b1c3e..0730cf6e7bf 100644
--- a/clang/lib/Sema/SemaExprObjC.cpp
+++ b/clang/lib/Sema/SemaExprObjC.cpp
@@ -2448,10 +2448,14 @@ ExprResult Sema::BuildInstanceMessage(Expr *Receiver,
         Method = LookupFactoryMethodInGlobalPool(Sel, 
                                                  SourceRange(LBracLoc,RBracLoc),
                                                  receiverIsId);
-      if (Method)
+      if (Method) {
         if (ObjCMethodDecl *BestMethod =
               SelectBestMethod(Sel, ArgsIn, Method->isInstanceMethod()))
           Method = BestMethod;
+          SmallVector<ObjCMethodDecl*, 4> Methods;
+          if (!CollectMultipleMethodsInGlobalPool(Sel, Methods, Method->isInstanceMethod()))
+            DiagnoseUseOfDecl(Method, SelLoc);
+      }
     } else if (ReceiverType->isObjCClassType() ||
                ReceiverType->isObjCQualifiedClassType()) {
       // Handle messages to Class.