[clang] Add the objc interface case to the function get_decl_from_typ_ptr

Reviewed By: akotulski

Differential Revision: D3995051

fbshipit-source-id: 0c26159

infer/src/clang/cFrontend_utils.ml

@@ -260,9 +260,9 @@ struct
   let get_decl_from_typ_ptr typ_ptr =
     let typ_opt = get_desugared_type typ_ptr in
     let typ = match typ_opt with Some t -> t | _ -> assert false in
-    (* it needs extending to handle objC types *)
     match typ with
-    | Clang_ast_t.RecordType (_, decl_ptr) -> get_decl decl_ptr
+    | Clang_ast_t.RecordType (_, decl_ptr)
+    | Clang_ast_t.ObjCInterfaceType (_, decl_ptr) -> get_decl decl_ptr
     | _ -> None
 
   (*TODO take the attributes into account too. To be done after we get the attribute's arguments. *)

infer/src/clang/cFrontend_utils.mli

@@ -88,8 +88,8 @@ sig
       See get_type for more info and restrictions *)
   val get_desugared_type : Clang_ast_t.type_ptr -> Clang_ast_t.c_type option
 
-  (** returns declaration of the type for certain types and crashes for others
-      NOTE: this function needs extending to handle objC types *)
+(** returns declaration of the type for certain types
+    (RecordType, ObjCInterfaceType and None for others *)
   val get_decl_from_typ_ptr : Clang_ast_t.type_ptr -> Clang_ast_t.decl option
 
   (** returns string representation of type_ptr