diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index b9514f3..c5b4517 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -1859,6 +1859,16 @@
       return;
     }
     else if (PointeeTy->isObjCInterfaceType()) {
+      if (dyn_cast<TypedefType>(PointeeTy.getTypePtr())) {
+        // Another historical/compatibility reason.
+        // We encode the underlying type which comes out as 
+        // {...};
+        S += '^';
+        getObjCEncodingForTypeImpl(PointeeTy, S, 
+                                   false, ExpandPointedToStructures, 
+                                   NULL);
+        return;
+      }
       S += '@';
       if (FD) {
         ObjCInterfaceDecl *OI = PointeeTy->getAsObjCInterfaceType()->getDecl();