diff --git a/mps/qa/function/19.c b/mps/qa/function/19.c
new file mode 100644
index 00000000000..74387948494
--- /dev/null
+++ b/mps/qa/function/19.c
@@ -0,0 +1,57 @@
+/* test create lots of aps at once (and cause to run out of memory)
+   language c
+   link testlib.o newfmt.o
+*/
+
+#include "testlib.h"
+#include "mpscamc.h"
+#include "mpscmv.h"
+#include "newfmt.h"
+
+void *stackpointer;
+
+static void test(void) {
+ mps_space_t space;
+ mps_pool_t pool;
+ mps_thr_t thread;
+ mps_fmt_t format;
+ mps_root_t root;
+ mps_ap_t ap;
+ mps_addr_t q;
+
+ int p;
+
+ die(mps_space_create(&space), "create");
+ die(mps_thread_reg(&thread, space), "register thread");
+ die(mps_root_create_reg(&root, space, MPS_RANK_AMBIG, 0, thread,
+  mps_stack_scan_ambig, stackpointer, 0), "create root");
+ die(mps_fmt_create_A(&format, space, &fmtA), "create format");
+
+ die(mps_pool_create(&pool, space, mps_class_mv(),
+  1024*32, 1024*16, 1024*256), "pool");
+
+ while (mps_alloc(&q, pool, 64*1024)==MPS_RES_OK);
+ p=0;
+
+ die(mps_pool_create(&pool, space, mps_class_amc(), format),
+  "create pool");
+
+ while (1) {
+  p++;
+  die(mps_ap_create(&ap, pool, MPS_RANK_EXACT),
+   "create ap");
+  report("ap", "%i", p);
+ }
+
+ asserts(1, "Unreachable!");
+}
+
+int main(void)
+{
+ void *m;
+ stackpointer=&m; /* hack to get stack pointer */
+
+ easy_tramp(test);
+ pass();
+ return 0;
+}
diff --git a/mps/qa/function/20.c b/mps/qa/function/20.c
new file mode 100644
index 00000000000..5f66d2c2b9c
--- /dev/null
+++ b/mps/qa/function/20.c
@@ -0,0 +1,51 @@
+/* test create lots of formats at once (and cause to run out of memory)
+   language c
+   link testlib.o newfmt.o
+*/
+
+#include "testlib.h"
+#include "mpscamc.h"
+#include "mpscmv.h"
+#include "newfmt.h"
+
+void *stackpointer;
+
+static void test(void) {
+ mps_space_t space;
+ mps_pool_t pool;
+ mps_thr_t thread;
+ mps_fmt_t format;
+ mps_root_t root;
+ mps_addr_t q;
+
+ int p;
+
+ die(mps_space_create(&space), "create");
+ die(mps_thread_reg(&thread, space), "register thread");
+ die(mps_root_create_reg(&root, space, MPS_RANK_AMBIG, 0, thread,
+  mps_stack_scan_ambig, stackpointer, 0), "create root");
+
+ die(mps_pool_create(&pool, space, mps_class_mv(),
+  1024*32, 1024*16, 1024*256), "pool");
+
+ while (mps_alloc(&q, pool, 64*1024)==MPS_RES_OK);
+ p=0;
+
+ while (1) {
+  p++;
+  die(mps_fmt_create_A(&format, space, &fmtA), "create format");
+  report("format", "%i", p);
+ }
+
+ asserts(1, "Unreachable!");
+}
+
+int main(void)
+{
+ void *m;
+ stackpointer=&m; /* hack to get stack pointer */
+
+ easy_tramp(test);
+ pass();
+ return 0;
+}
diff --git a/mps/qa/function/21.c b/mps/qa/function/21.c
new file mode 100644
index 00000000000..f6a4ce78378
--- /dev/null
+++ b/mps/qa/function/21.c
@@ -0,0 +1,32 @@
+/* test allocate large promise, make it small, repeat
+   language c
+   link testlib.o
+*/
+
+#include "testlib.h"
+#include "mpscmv.h"
+
+static void test(void) {
+ mps_space_t space;
+ mps_pool_t pool;
+ mps_addr_t q;
+ int p;
+
+ die(mps_space_create(&space), "create");
+
+ die(mps_pool_create(&pool, space, mps_class_mv(),
+  1024*32, 1024*16, 1024*256), "pool");
+
+ for (p=0; p<2000; p++) {
+  die(mps_alloc(&q, pool, 1024*1024), "alloc");
+  q = (mps_addr_t) ((char *) q + 8);
+  mps_free(pool, q, 256*1024-8);
+  report("promise", "%i", p);
+ }
+}
+
+int main(void) {
+ easy_tramp(test);
+ pass();
+ return 0;
+}
diff --git a/mps/qa/function/22.c b/mps/qa/function/22.c
new file mode 100644
index 00000000000..a2ba61dc8a5
--- /dev/null
+++ b/mps/qa/function/22.c
@@ -0,0 +1,34 @@
+/* test allocate large promise, make it small, repeat interleaved
+   language c
+   link testlib.o
+*/
+
+#include "testlib.h"
+#include "mpscmv.h"
+
+static void test(void) {
+ mps_space_t space;
+ mps_pool_t pool;
+ mps_addr_t q, r;
+ int p;
+
+ die(mps_space_create(&space), "create");
+
+ die(mps_pool_create(&pool, space, mps_class_mv(),
+  1024*32, 1024*16, 1024*256), "pool");
+
+ die(mps_alloc(&q, pool, 1024*1024), "alloc");
+
+ for (p=0; p<2000; p++) {
+  report("promise", "%i", p);
+  die(mps_alloc(&r, pool, 1024*1024), "alloc");
+  mps_free(pool, q, 256*1024-8);
+  q = (mps_addr_t) ((char *) r + 8);
+ }
+}
+
+int main(void) {
+ easy_tramp(test);
+ pass();
+ return 0;
+}