diff --git a/example/ex11-use-pool.c b/example/ex11-use-pool.c
new file mode 100644
index 00000000..382cb816
--- /dev/null
+++ b/example/ex11-use-pool.c
@@ -0,0 +1,146 @@
+#include <stdlib.h>
+
+typedef int *context_t;
+
+static void *my_realloc(void *ptr, size_t old, size_t new, size_t base, context_t context)
+{
+    (void) context;
+    (void) old;
+    return realloc(ptr, new*base);
+}
+
+static void my_free(void *ptr, size_t old, size_t base, context_t context)
+{
+    (void) context;
+    (void) old;
+    (void) base;
+    free(ptr);
+}
+
+# define M_USE_POOL context_t
+# define M_MEMORY_REALLOC(type, ptr, o, n) my_realloc(ptr, o, n, sizeof (type), m_pool)
+# define M_MEMORY_FREE(type, ptr, o) my_free(ptr, o, sizeof (*ptr), m_pool)
+
+# define M_MEMORY_ALLOC(type) my_realloc(NULL, 0, 1, sizeof (type), m_pool)
+# define M_MEMORY_DEL(ptr) my_free(ptr, 1, sizeof (*ptr), m_pool)
+
+#include "m-string.h"
+#include "m-bitset.h"
+#include "m-bstring.h"
+#include "m-genint.h"
+
+context_t my_pool = NULL;
+extern int f(string_t,  bitset_t b, bstring_t y);
+
+int f(string_t x, bitset_t b, bstring_t y)
+{
+    string_init(x);
+    string_set_str(my_pool, x, "Hello world");
+    string_clear(my_pool, x);
+
+    bitset_init(b);
+    bitset_push_back(my_pool, b, true);
+    bitset_clear(my_pool, b);
+
+    bstring_init(y);
+    bstring_push_back(my_pool, y, 0);
+    bstring_clear(my_pool, y);
+
+    return 0;
+}
+
+#include "m-array.h"
+
+ARRAY_DEF(array, int)
+ARRAY_DEF(array_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-prioqueue.h"
+
+PRIOQUEUE_DEF(prio, int)
+PRIOQUEUE_DEF(prio_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-rbtree.h"
+
+RBTREE_DEF(rbtree, int)
+RBTREE_DEF(rbtree_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-list.h"
+
+LIST_DEF(list, int)
+LIST_DEF(list_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-bptree.h"
+
+BPTREE_DEF2(bptree, 5, int, int)
+
+#include "m-dict.h"
+
+DICT_DEF2(dict, int, int)
+DICT_DEF2(dict_str, string_t, M_STRING_POOL_OPLIST, string_t, M_STRING_POOL_OPLIST)
+
+DICT_SET_DEF(set, int)
+DICT_SET_DEF(set_str, string_t, M_STRING_POOL_OPLIST)
+
+static inline bool oor_equal_p(int k, char n)
+{
+  return k == INT_MIN + n;
+}
+
+static inline int  oor_set(char n)
+{
+  return INT_MIN + n;
+}
+
+DICT_OA_DEF2(dict_oa,
+    int, M_OPEXTEND(M_BASIC_OPLIST, OOR_EQUAL(oor_equal_p), OOR_SET(API_4(oor_set))),
+    int, M_BASIC_OPLIST)
+DICT_OA_DEF2(dict2_str, string_t, M_STRING_POOL_OPLIST, string_t, M_STRING_POOL_OPLIST)
+
+DICT_OASET_DEF(set_oa,
+    int, M_OPEXTEND(M_BASIC_OPLIST, OOR_EQUAL(oor_equal_p), OOR_SET(API_4(oor_set))) )
+DICT_OASET_DEF(set2_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-buffer.h"
+
+BUFFER_DEF(buffer1, int, 10, M_BUFFER_QUEUE)
+BUFFER_DEF(buffer2, int, 0, M_BUFFER_STACK)
+
+M_QUEUE_MPMC_DEF(queue1, int, M_BUFFER_STACK)
+M_QUEUE_SPSC_DEF(queue2, int, M_BUFFER_STACK)
+
+BUFFER_DEF(buffer11, string_t, 10, M_BUFFER_QUEUE, M_STRING_POOL_OPLIST)
+BUFFER_DEF(buffer22, string_t, 0, M_BUFFER_STACK, M_STRING_POOL_OPLIST)
+
+M_QUEUE_MPMC_DEF(queue11, string_t, M_BUFFER_STACK, M_STRING_POOL_OPLIST)
+M_QUEUE_SPSC_DEF(queue22, string_t, M_BUFFER_STACK, M_STRING_POOL_OPLIST)
+
+#include "m-deque.h"
+
+M_DEQUE_DEF(deque, int)
+M_DEQUE_DEF(deque_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-snapshot.h"
+
+M_SNAPSHOT_SPSC_DEF(snap1, int)
+M_SNAPSHOT_SPMC_DEF(snap2, int)
+M_SNAPSHOT_MPMC_DEF(snap3, int)
+
+#include "m-tree.h"
+
+M_TREE_DEF(tree, int)
+M_TREE_DEF(tree_str, string_t, M_STRING_POOL_OPLIST)
+
+#include "m-tuple.h"
+
+M_TUPLE_DEF2(tuple1, (num, int) )
+M_TUPLE_DEF2(tuple2, (num, int), (name, string_t, M_STRING_POOL_OPLIST) )
+
+#include "m-variant.h"
+
+M_VARIANT_DEF2(variant1, (num, int) )
+M_VARIANT_DEF2(variant2, (num, int), (name, string_t, M_STRING_POOL_OPLIST) )
+
+int main(void)
+{
+    return 0;
+}