diff --git a/test/test_sanitize.ml b/test/test_sanitize.ml
index 12090cd..971d768 100644
--- a/test/test_sanitize.ml
+++ b/test/test_sanitize.ml
@@ -128,9 +128,14 @@ let corpus =
     "programs/edn.flan", [];
     "programs/enum-compare.flan", [];
     "programs/error.flan", [];
+    (* Makes and removes its own tree, so the two runs of the sweep see the
+       same directory; the new C here is three more path buffers, which is
+       exactly what this tool is for. *)
+    "programs/files.flan", [];
     "programs/handles.flan", [];
     "programs/machine.flan", [];
     "programs/math.flan", [];
+    "programs/math3.flan", [];
     "programs/pkg-diamond.flan", [];
     "programs/pkg-return.flan", [];
     "programs/pkg-shared.flan", [];
@@ -143,6 +148,10 @@ let corpus =
     "programs/slices.flan", [];
     "programs/string-of-bytes.flan", [];
     "programs/text.flan", [];
+    (* The clock and getenv. getenv hands back a slice viewing the process
+       environment and never a copy, so a report here would be the one that
+       matters. *)
+    "programs/time.flan", [];
     "programs/unit-main.flan", [];
     "programs/utf8.flan", [];
     "programs/values.flan", [];
diff --git a/test/test_valgrind.ml b/test/test_valgrind.ml
index e58a06e..3577948 100644
--- a/test/test_valgrind.ml
+++ b/test/test_valgrind.ml
@@ -215,6 +215,7 @@ let corpus =
     "programs/error.flan", [];
     "programs/exhausted.flan", [];
     "programs/exhausted-unhandled.flan", [];
+    "programs/files.flan", [];
     "programs/free-all-refused.flan", [];
     "programs/handles.flan", [];
     "programs/machine.flan", [];
@@ -222,6 +223,7 @@ let corpus =
     "programs/map-stale-region.flan", [];
     "programs/maps.flan", [];
     "programs/math.flan", [];
+    "programs/math3.flan", [];
     "programs/pool-stale-region.flan", [];
     "programs/pkg-macro.flan", [];
     "programs/pkg-diamond.flan", [];
@@ -241,6 +243,7 @@ let corpus =
     "programs/stale-region.flan", [];
     "programs/string-of-bytes.flan", [];
     "programs/text.flan", [];
+    "programs/time.flan", [];
     "programs/datas.flan", [];
     "programs/unit-main.flan", [];
     "programs/utf8.flan", [];