This patch introduces the ObjcCategoryImplDecl class and does the checking related to 
unimplemented methods in category implementation.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42531 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Parse/ParseObjc.cpp b/Parse/ParseObjc.cpp
index ea53659..cda2ab5 100644
--- a/Parse/ParseObjc.cpp
+++ b/Parse/ParseObjc.cpp
@@ -934,7 +934,10 @@
       return 0;
     }
     rparenLoc = ConsumeParen();
-    return 0;
+    DeclTy *ImplCatType = Actions.ObjcStartCategoryImplementation(CurScope,
+                                    atLoc, nameId, nameLoc, categoryId, 
+                                    categoryLoc);
+    return ImplCatType;
   }
   // We have a class implementation
   SourceLocation superClassLoc;