diff --git a/m-buffer.h b/m-buffer.h
index 061761ed..562bcbc9 100644
--- a/m-buffer.h
+++ b/m-buffer.h
@@ -542,6 +542,8 @@ M_C(name, _init)(buffer_t v, size_t size)                               \
 
 
 
+
+
 /* Definition of a a QUEUE for Many Produccer / Many Consummer
    for high bandwidth scenario:
    * lock-free,
diff --git a/tests/test-mbuffer.c b/tests/test-mbuffer.c
index 933cfe52..7d4de3cd 100644
--- a/tests/test-mbuffer.c
+++ b/tests/test-mbuffer.c
@@ -46,6 +46,7 @@ QUEUE_MPMC_DEF(queue_z, testobj_t, BUFFER_QUEUE, TESTOBJ_OPLIST)
 QUEUE_SPSC_DEF(squeue_a, testobj_t, BUFFER_QUEUE, TESTOBJ_OPLIST)
 
 buffer_uint_t g_buff;
+buffer_uint_t g_buffB;
 
 // Number of thread created by the test (twice this amount).
 #define MAX_TEST_THREAD  100
@@ -117,6 +118,36 @@ static void test_global(void)
 
   assert (buffer_uint_overwrite(g_buff) == 0);
 
+  buffer_uint_init_set(g_buffB, g_buff);
+  assert (buffer_uint_empty_p(g_buffB));
+  buffer_uint_clear(g_buffB);
+  for(unsigned int i = 0; i < 5;i++)
+    buffer_uint_push(g_buff, i);
+  buffer_uint_init_set(g_buffB, g_buff);
+  assert (!buffer_uint_empty_p(g_buffB));
+  assert (!buffer_uint_full_p(g_buffB));
+  assert (buffer_uint_size(g_buffB) == 5);
+  for(unsigned int i = 0; i < 5;i++) {
+    unsigned int j;
+    bool b= buffer_uint_pop(&j, g_buffB);
+    assert(b);
+    assert(j == i);
+  }
+  assert (buffer_uint_empty_p(g_buffB));
+
+  buffer_uint_set(g_buffB, g_buff);
+  assert (!buffer_uint_empty_p(g_buffB));
+  assert (!buffer_uint_full_p(g_buffB));
+  assert (buffer_uint_size(g_buffB) == 5);
+  for(unsigned int i = 0; i < 5;i++) {
+    unsigned int j;
+    bool b= buffer_uint_pop(&j, g_buffB);
+    assert(b);
+    assert(j == i);
+  }
+  assert (buffer_uint_empty_p(g_buffB));
+  buffer_uint_clear(g_buffB);  
+
   buffer_uint_clear(g_buff);
 }