objective-c arc: Issue warning under -Wreceiver-is-weak

if receiver is a 'weak' property, by type or by attribute.
// rdar://10225276


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155159 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Sema/SemaPseudoObject.cpp b/lib/Sema/SemaPseudoObject.cpp
index 0e6632964a..078b0e4bc4 100644
--- a/lib/Sema/SemaPseudoObject.cpp
+++ b/lib/Sema/SemaPseudoObject.cpp
@@ -478,6 +478,8 @@ bool ObjCPropertyOpBuilder::findGetter() {
   if (RefExpr->isImplicitProperty()) {
     if ((Getter = RefExpr->getImplicitPropertyGetter())) {
       GetterSelector = Getter->getSelector();
+      S.DiagnoseARCUseOfWeakReceiver(Getter, Getter->getResultType(),
+                                     RefExpr->getLocation());
       return true;
     }
     else {
@@ -497,6 +499,8 @@ bool ObjCPropertyOpBuilder::findGetter() {
   }
 
   ObjCPropertyDecl *prop = RefExpr->getExplicitProperty();
+  S.DiagnoseARCUseOfWeakReceiver(prop, prop->getType(),
+                                 RefExpr->getLocation());
   Getter = LookupMethodInReceiverType(S, prop->getGetterName(), RefExpr);
   return (Getter != 0);
 }