Patch to implement "Protocol" as a built-in type declared as
"@class Protocol;"


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44670 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/ASTContext.cpp b/AST/ASTContext.cpp
index 3f5a7fb..e8ed9a2 100644
--- a/AST/ASTContext.cpp
+++ b/AST/ASTContext.cpp
@@ -1121,15 +1121,10 @@
   SelStructType = rec;
 }
 
-void ASTContext::setObjcProtoType(TypedefDecl *TD)
+void ASTContext::setObjcProtoType(QualType QT)
 {
   assert(ObjcProtoType.isNull() && "'Protocol' type already set!");
-  
-  // typedef struct Protocol Protocol;
-  ObjcProtoType = TD->getUnderlyingType();
-  // Protocol * type
-  ObjcProtoType = getPointerType(ObjcProtoType);  
-  ProtoStructType = TD->getUnderlyingType()->getAsStructureType();
+  ObjcProtoType = QT;
 }
 
 void ASTContext::setObjcClassType(TypedefDecl *TD)