Workaround to avoid CLANG unused function warnings

m-deque.h

@@ -30,9 +30,11 @@
 /* Define a deque of a given type and its associated functions.
    USAGE: DEQUE_DEF(name, type [, oplist_of_the_type]) */
 #define DEQUE_DEF(name, ...)                                            \
+  M_BEGIN_PROTECTED_CODE                                                \
   DEQUEI_DEF_P1(M_IF_NARGS_EQ1(__VA_ARGS__)                             \
                 ((name, __VA_ARGS__, M_GLOBAL_OPLIST_OR_DEF(__VA_ARGS__)(), M_C(name,_t), M_C(name,_it_t), M_C(name, _node_t) ), \
-                 (name, __VA_ARGS__,                                        M_C(name,_t), M_C(name,_it_t), M_C(name, _node_t))))
+                 (name, __VA_ARGS__,                                        M_C(name,_t), M_C(name,_it_t), M_C(name, _node_t)))) \
+  M_END_PROTECTED_CODE
 
 
 /* Define the oplist of a deque of a type.