diff --git a/test/dtor_queue_all.c b/test/dtor_queue_all.c
index 0be6acad3..9dc220039 100644
--- a/test/dtor_queue_all.c
+++ b/test/dtor_queue_all.c
@@ -23,13 +23,13 @@ main(void)
 
       r = __MCF_dtor_queue_push(&queue, &elem);
       assert(r == 0);
-      fprintf(stderr, "push: %d, size = %d\n", (int) elem.__this, (int) queue.__size);
+      fprintf(stderr, "push: %d, size = %d\n", (int)(intptr_t) elem.__this, (int)(intptr_t) queue.__size);
     }
 
     for(intptr_t k = 1000;  k >= 1;  --k) {
       r = __MCF_dtor_queue_pop(&elem, &queue, __MCF_nullptr);
       assert(r == 0);
-      fprintf(stderr, "pop: %d, size = %d\n", (int) elem.__this, (int) queue.__size);
+      fprintf(stderr, "pop: %d, size = %d\n", (int)(intptr_t) elem.__this, (int)(intptr_t) queue.__size);
 
       assert(elem.__this == (void*) k);
       assert(elem.__dso == (void*) (k % 10));
diff --git a/test/dtor_queue_dso.c b/test/dtor_queue_dso.c
index 8dcc2828f..b355ca44c 100644
--- a/test/dtor_queue_dso.c
+++ b/test/dtor_queue_dso.c
@@ -23,7 +23,7 @@ main(void)
 
       r = __MCF_dtor_queue_push(&queue, &elem);
       assert(r == 0);
-      fprintf(stderr, "push: %d, size = %d\n", (int) elem.__this, (int) queue.__size);
+      fprintf(stderr, "push: %d, size = %d\n", (int)(intptr_t) elem.__this, (int)(intptr_t) queue.__size);
 
     }
 
@@ -31,7 +31,7 @@ main(void)
       for(intptr_t k = 99;  k >= 0;  --k) {
         r = __MCF_dtor_queue_pop(&elem, &queue, (void*) m);
         assert(r == 0);
-        fprintf(stderr, "pop: %d, size = %d\n", (int) elem.__this, (int) queue.__size);
+        fprintf(stderr, "pop: %d, size = %d\n", (int)(intptr_t) elem.__this, (int)(intptr_t) queue.__size);
 
         assert(elem.__this == (void*) (k * 10 + m));
         assert(elem.__dso == (void*) m);
diff --git a/test/dtor_queue_remove.c b/test/dtor_queue_remove.c
index da8469a09..eddfa1251 100644
--- a/test/dtor_queue_remove.c
+++ b/test/dtor_queue_remove.c
@@ -23,7 +23,7 @@ main(void)
 
       r = __MCF_dtor_queue_push(&queue, &elem);
       assert(r == 0);
-      fprintf(stderr, "push: %d, size = %d\n", (int) elem.__this, (int) queue.__size);
+      fprintf(stderr, "push: %d, size = %d\n", (int)(intptr_t) elem.__this, (int)(intptr_t) queue.__size);
 
     }
 
@@ -39,7 +39,7 @@ main(void)
       for(intptr_t k = 99;  k >= 0;  --k) {
         r = __MCF_dtor_queue_pop(&elem, &queue, (void*) m);
         assert(r == 0);
-        fprintf(stderr, "pop: %d, size = %d\n", (int) elem.__this, (int) queue.__size);
+        fprintf(stderr, "pop: %d, size = %d\n", (int)(intptr_t) elem.__this, (int)(intptr_t) queue.__size);
 
         assert(elem.__this == (void*) (k * 10 + m));
         assert(elem.__dso == (void*) m);