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

1 files changed, 7 insertions, 0 deletions

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());