diff --git a/mps/code/apss.c b/mps/code/apss.c
index 89604831dcf..0d198cb7573 100644
--- a/mps/code/apss.c
+++ b/mps/code/apss.c
@@ -87,6 +87,14 @@ static mps_res_t stress(mps_arena_t arena, mps_pool_debug_option_s *options,
     check_allocated_size(pool, ap, allocated);
   }
 
+  /* Check introspection functions */
+  for (i = 0; i < NELEMS(ps); ++i) {
+    mps_pool_t addr_pool = NULL;
+    Insist(mps_arena_has_addr(arena, ps[i]));
+    Insist(mps_addr_pool(&addr_pool, arena, ps[i]));
+    Insist(addr_pool == pool);
+  }
+
   mps_pool_check_fenceposts(pool);
 
   for (k=0; k<testLOOPS; ++k) {
diff --git a/mps/code/mpsicv.c b/mps/code/mpsicv.c
index a6b23f00578..c90230c85a6 100644
--- a/mps/code/mpsicv.c
+++ b/mps/code/mpsicv.c
@@ -233,6 +233,7 @@ static void ap_create_v_test(mps_pool_t pool, ...)
 /* addr_pool_test
  *
  * intended to test:
+ *   mps_arena_has_addr
  *   mps_addr_pool
  *   mps_addr_fmt
  */
@@ -270,6 +271,7 @@ static void addr_pool_test(mps_arena_t arena,
   addr = obj1;
   pool = poolDistinguished;
   fmt = fmtDistinguished;
+  cdie(mps_arena_has_addr(arena, addr), "mps_arena_has_addr 0a");
   b = mps_addr_pool(&pool, arena, addr);
   /* printf("b %d; pool %p; sig %lx\n", b, (void *)pool,
             b ? ((mps_word_t*)pool)[0] : (mps_word_t)0); */
@@ -283,6 +285,7 @@ static void addr_pool_test(mps_arena_t arena,
   addr = obj2;
   pool = poolDistinguished;
   fmt = fmtDistinguished;
+  cdie(mps_arena_has_addr(arena, addr), "mps_arena_has_addr 0b");
   b = mps_addr_pool(&pool, arena, addr);
   /* printf("b %d; pool %p; sig %lx\n", b, (void *)pool,
             b ? ((mps_word_t*)pool)[0] : (mps_word_t)0); */
@@ -296,6 +299,7 @@ static void addr_pool_test(mps_arena_t arena,
   addr = &pool;  /* point at stack, not in any chunk */
   pool = poolDistinguished;
   fmt = fmtDistinguished;
+  cdie(mps_arena_has_addr(arena, addr) == FALSE, "mps_arena_has_addr 5");
   b = mps_addr_pool(&pool, arena, addr);
   cdie(b == FALSE && pool == poolDistinguished, "mps_addr_pool 5");
   b = mps_addr_fmt(&fmt, arena, addr);