From dad963039874d88f0adc6889b64283fe5d1c94c6 Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Wed, 22 Jan 2014 19:02:20 +0000
Subject: ObjectiveC. When issuing property implementation is not using backing
 ivar warning, ignore when property is not being synthesized (user declared
 its implementation @dynamic). // rdar://1583425

llvm-svn: 199820
---
 clang/lib/Sema/SemaDeclObjC.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'clang/lib/Sema/SemaDeclObjC.cpp')

diff --git a/clang/lib/Sema/SemaDeclObjC.cpp b/clang/lib/Sema/SemaDeclObjC.cpp
index f7f1b4b5653..78c26d38a9f 100644
--- a/clang/lib/Sema/SemaDeclObjC.cpp
+++ b/clang/lib/Sema/SemaDeclObjC.cpp
@@ -3514,6 +3514,13 @@ void Sema::DiagnoseUnusedBackingIvarInAccessor(Scope *S,
     const ObjCIvarDecl *IV = GetIvarBackingPropertyAccessor(CurMethod, PDecl);
     if (!IV)
       continue;
+    // Property declared as @dynamic must be ignored.
+    if (ObjCPropertyImplDecl *PropertyImpDecl =
+          Context.getObjCPropertyImplDeclForPropertyDecl(PDecl, ImplD))
+      if (PropertyImpDecl->getPropertyImplementation() ==
+            ObjCPropertyImplDecl::Dynamic)
+        continue;
+      
 
     UnusedBackingIvarChecker Checker(*this, CurMethod, IV);
     Checker.TraverseStmt(CurMethod->getBody());
-- 
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