From 61750f2bed7f5c0e440318841e3be385920b22f3 Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Wed, 30 Mar 2011 16:59:30 +0000
Subject: [PATCH] de-sugared when accessing property reference type. Add a test
 case for synthesize ivar. // rdar://9070460

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128554 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/SemaExpr.cpp                 |  2 +-
 lib/Sema/SemaObjCProperty.cpp         |  2 +-
 test/SemaObjCXX/property-reference.mm | 44 +++++++++++++++++++++++++++
 3 files changed, 46 insertions(+), 2 deletions(-)
 create mode 100644 test/SemaObjCXX/property-reference.mm

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 22b0f03a52..9ebc7de84d 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -7421,7 +7421,7 @@ static bool IsConstProperty(Expr *E, Sema &S) {
     ObjCPropertyDecl *PDecl = PropExpr->getExplicitProperty();
     QualType T = PDecl->getType();
     if (T->isReferenceType())
-      T = cast<ReferenceType>(T)->getPointeeType();
+      T = T->getAs<ReferenceType>()->getPointeeType();
     CanQualType CT = S.Context.getCanonicalType(T);
     return CT.isConstQualified();
   }
diff --git a/lib/Sema/SemaObjCProperty.cpp b/lib/Sema/SemaObjCProperty.cpp
index 43e30275e2..95a365cacf 100644
--- a/lib/Sema/SemaObjCProperty.cpp
+++ b/lib/Sema/SemaObjCProperty.cpp
@@ -540,7 +540,7 @@ Decl *Sema::ActOnPropertyImplDecl(Scope *S,
       ParmVarDecl *Param = (*P);
       QualType T = Param->getType();
       if (T->isReferenceType())
-        T = cast<ReferenceType>(T)->getPointeeType();
+        T = T->getAs<ReferenceType>()->getPointeeType();
       Expr *rhs = new (Context) DeclRefExpr(Param, T,
                                             VK_LValue, SourceLocation());
       ExprResult Res = BuildBinOp(S, lhs->getLocEnd(), 
diff --git a/test/SemaObjCXX/property-reference.mm b/test/SemaObjCXX/property-reference.mm
new file mode 100644
index 0000000000..5dc8061de7
--- /dev/null
+++ b/test/SemaObjCXX/property-reference.mm
@@ -0,0 +1,44 @@
+// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin10 -fsyntax-only -verify -fobjc-nonfragile-abi %s
+// rdar://9070460
+
+class TCPPObject
+{
+public:
+	TCPPObject(const TCPPObject& inObj);
+	TCPPObject();
+	~TCPPObject();
+	
+	TCPPObject& operator=(const TCPPObject& inObj)const ;
+
+	void* Data();
+	
+private:
+	void* fData;
+};
+
+
+typedef const TCPPObject& CREF_TCPPObject;
+
+@interface TNSObject
+@property (assign, readwrite, nonatomic) CREF_TCPPObject cppObjectNonAtomic;
+@property (assign, readwrite) CREF_TCPPObject cppObjectAtomic;
+@property (assign, readwrite, nonatomic) const TCPPObject& cppObjectDynamic;
+@end
+
+
+@implementation TNSObject
+
+@synthesize cppObjectNonAtomic;
+@synthesize cppObjectAtomic;
+@dynamic cppObjectDynamic;
+
+- (const TCPPObject&) cppObjectNonAtomic
+{
+	return cppObjectNonAtomic;
+}
+
+- (void) setCppObjectNonAtomic: (const TCPPObject&)cppObject
+{
+	cppObjectNonAtomic = cppObject;
+}
+@end
-- 
2.40.0